Answer:
El fósforo (P) es esencial en todas las formas de vida conocidas, dado que constituye un elemento clave en muchos procesos fisiológicos y bioquímicos. Se trata de un componente presente en todas las células de todos los organismos vivos. El fósforo aparece en estructuras complejas de ADN y ARN que, al contener y codificar la información genética, controlan todos los procesos biológicos en las plantas. Además, el fósforo es un componente fundamental del sistema de transporte de energía en todas las células.
El fósforo no aparece aislado en la naturaleza, sino que se encuentra siempre combinado con otros elementos con los que forma los fosfatos que pueden ser muy complejos y presentarse bajo distintas formas en los suelos, el agua, las plantas, los animales y el hombre. Por tanto, se utilizará la palabra “fósforo” de forma genérica en lugar de identificar el fosfato concreto, aunque en la mayoría de los casos, se ofrecerán valores numéricos como P2O5 .
Hasta una época relativamente reciente, el crecimiento de las plantas y de los animales, y por extensión, la productividad de la agricultura, se veían limitados por la falta de fósforo, ya que anualmente solo se disponía de unas pequeñas cantidades de las rocas y de los minerales del suelo gracias a la acción erosiva de los elementos. Cuando los agricultores comenzaron a utilizar fertilizantes en el siglo XIX, los niveles de fósforo disponible para las plantas en muchos suelos eran todavía muy bajos. Por eso, hasta que no se comenzó a aplicar fósforo, la respuesta a otros nutrientes, especialmente al nitrógeno, era muy pequeña, es decir, que el fósforo era el nutriente limitante del crecimiento de las cosechas.
El fósforo desempeña un papel fundamental en la fotosíntesis, proceso por el que las plantas absorben la energía del sol para sintetizar moléculas de carbohidratos, es decir, de azúcares, que son transportados a los órganos de almacenamiento de las plantas. Este proceso es esencial para todas las formas de vida y constituye el primer paso en la cadena para producir alimentos, piensos y fibras.
Las raíces de las plantas absorben el fósforo del agua presente en el suelo y que se denomina solución acuosa del suelo.
Sin embargo, los compuestos de fósforo no son muy solubles y, como consecuencia, la cantidad de fósforo que la planta puede tomar de la solución acuosa del suelo tiende a ser mucho menor de la que necesita, especialmente cuando la planta se encuentra en un periodo de fuerte crecimiento. Por eso, el fósforo de la solución acuosa del suelo debería reponerse con una frecuencia de diez veces al día en esos periodos.
En un día, una cosecha de rápido crecimiento puede absorber el equivalente a cerca de 2,5 kg de P2O5 por hectárea (una hectárea equivale a 10.000 m2 ). De esto se deduce, por tanto, que es necesario que existan reservas adecuadas de fósforo en el suelo y que esas reservas puedan estar disponibles con facilidad. La mayoría de los suelos no abonados contienen una cantidad demasiado pequeña de fósforo, fácilmente aprovechable, para dar respuesta a la gran demanda de las cosechas, en especial durante ciertos periodos del ciclo de crecimiento. De ahí, que se imponga la necesidad de aplicar fertilizantes que contengan fósforo.
La carencia de fósforo afecta no solo al crecimiento de la planta y al desarrollo y rendimiento de la cosecha, sino también a la calidad del fruto y a la formación de las semillas. Asimismo, la carencia de fósforo puede retrasar la maduración de las cosechas, con lo que se retrasa la recolección y se pone en riesgo la calidad del producto.
Explanation:
A green pea plant (yy) is crossed with a yellow pea plant (YY).
If a green pea plant (yy) is crossed with a yellow pea plant (YY) then all offspring will be yellow and heterozygous for the trait with genotype Yy.
What is a heterozygous genotype?A heterozygous genotype is a genetic composition in which two different alleles are present for a particular gene, thereby both gene variants may contribute to the phenotype when it does not involve complete dominance such as occurs in this case.
Therefore, with this data, we can see that a heterozygous genotype is composed of two different alleles that may contribute to the phenotype.
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A polyunsaturated fatty acid contains more than one
A) carboxyl group
B) hydroxyl group
C) carbonyl group
D) long carbon chain
E) carbon-carbon double bond
A polyunsaturated fatty acid contains more than one carbon-carbon double bond.
A polyunsaturated fatty acid is a type of fatty acid that contains more than one carbon-carbon double bond. This means that there are multiple places in the fatty acid where two carbon atoms are bonded together with a double bond, rather than a single bond. The presence of these double bonds results in a kink in the fatty acid's long carbon chain, which can affect the properties and behavior of the fatty acid. These fatty acids are considered beneficial for heart health, however, it is important to consume them in moderation as part of a healthy diet.
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How do humans effect the marine ecosystem?
Human activities affect marine life and marine habitats through overfishing, habitat loss, the introduction of invasive species, ocean pollution, ocean acidification and ocean warming.
About Marine ecosystemsMarine ecosystems are life in the sea that includes biotic (living) and abiotic (non-living) elements. In essence, everything contained in the sea is included in the marine ecosystem.
The biotic elements are fish, shellfish, algae, and anemones. While the abiotic elements are water, oxygen, sunlight, salt, sand, and rocks.
Citing various sources, the sea has an area of more than two-thirds of the earth's surface or around 71 percent.
Because it is so broad, the food chain is diverse. One of the food chains in a marine ecosystem is energy sun-algae-small fish-big fish-sharks-decomposers.
In this food chain, solar energy helps algae photosynthesize. The results of algae photosynthesis are food for small fish.
Small fish as first consumers are then eaten by big fish. Sharks occupy the highest place as predators that eat large fish. Then it will be broken down by decomposers when it dies.
The importance of the marine ecosystem because it provides many benefits for life, such as a place for research, a source of food, a source of drinking water, as a tourist attraction, flood control, and a place for cultivating shellfish, fish, and others.
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how does bacteria affect the nitrogen cycle??
Answer: Nitrogen-fixing bacteria in the soil and within the root nodules of some plants convert nitrogen gas in the atmosphere to ammonia. Nitrifying bacteria convert ammonia to nitrites or nitrates. Ammonia, nitrites, and nitrates are all fixed nitrogen and can be absorbed by plants.
Define the following terms.
Drag the terms on the left to the appropriate blanks on the right to complete the sentences.
autotetraploid
paracentric inversion
Edwards syndrome
pericentric inversion
Patau syndrome
monosomy
trisomy
euploidy
autopolyploidy
allopolyploidy
amphidiploid
aneuploidy
1. is a general condition when an organism gains or loses one or more chromosomes but not a complete set.
2. is a general condition where complete haploid sets of chromosomes are present.
3. is a loss of one chromosome from an otherwise diploid genome.
4. is a gain of one chromosome in addition to an otherwise diploid genome.
5. is a trisomy of chromosome 13 in humans.
6. is a trisomy of chromosome 18 in humans.
7. is the addition of one or more extra sets of chromosomes, identical to the normal haploid complement of the same species.
8. is the case of polyploidy when the chromosomes originate from the hybridization of two different species, usually closely related.
9. is a polyploid that has two extra sets of chromosomes, identical to the normal haploid complement of the same species.
10. is an autotetraploid derived from two known original species.
11. is an inversion that has breakpoints that include the centromere
12. is an inversion that has breakpoints that do not include the centromere
1. When an organism gets or loses chromosomes, but not a full set, it is said to be aneuploid.
2. The presence of entire haploid sets of chromosomes is referred to as euploidy.
3. A monosomy is a diploid genome that has lost one of its chromosomes.
4. Trisomy is the addition of one chromosome to a genome that is normally diploid.
5. Humans with Patau syndrome have a trisomy of chromosome 13.
6. In humans, chromosome 18 trisomy causes Edwards syndrome.
7. The insertion of one or more additional sets of chromosomes that are identical to the typical haploid complement of the same species is known as autopolyploidy.
8. Allopolyploidy is a kind of polyploidy in which the chromosomes are the result of the hybridization of two distinct
11. The centromere is one of the breakpoints for the inversion known as pericentric inversion.
12. A paracentric inversion is one that does not have breakpoints at the centromere.
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The Geologic Time Scale is broken up into several periods of time, how is each period different?
The units of the geologic time scale are eons, eras, periods, epochs, and ages.
How is Earth's geologic time scale broken into different periods?The geologic time scale is the representation of time based on the rock record of the Earth. It is a system of chronological dating that uses chrono stratigraphy and geochronology. It is used by Earth scientists (including geologists, paleontologists, geophysicists, geochemists, and paleo climatologists) to describe the timing and relationships of events in the geologic history.
The calendar for events in the Earth history is the geologic time scale. Eons, eras, periods, epochs, and ages are only a few of the named units of abstract time that it divides all of time into.
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What is the theory of punctuated equilibrium?
It describes the rate of geologic time.
It explains why mass extinctions occur.
It describes one way that new species arise.
It explains how domestic animals evolved.
The theory of punctuated equilibrium describes one way that new species arise.
The third option is correct.
What is Punctuated equilibrium?Punctuated equilibrium is described as a term, which signifies the change in evolution of animals and plants in a comparative static manner.
The theory of punctuated equilibrium states these changes takes place in shots of time intermittently which is in contrary to the concept that life forms modify gradually with time in response to their surroundings,
The term is also in contrary to Darwin's more dynamic evolution model. In conclusion, punctuated equilibrium suggests that evolution only occurs in bursts of time, which are brisk.
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Which would least likely be a cause of natural selection?adaptationevolutionoverpopulationvariation
Least likely be a cause of natural selection the correct option is (c).Overpopulation.
The principle of the fittest surviving has to do with natural selection. Natural selection is therefore influenced by adaptation, variety, and overcrowding; those who do not adjust to their new environments due to overpopulation or those whose bodies have not undergone sufficient modification will not survive.
Evolution is a result of natural selection. Natural selection results from evolution. Evolution and natural selection are the same thing. Natural selection and evolution are unrelated. Evolution is a result of natural selection. A individual with sickle cell disease has the HbSS genotype. It is the main driving force of evolution. Charles Darwin's main ideas were written on the board by Veronica, however one of them had an error. The organisms in a population must reproduce since the environment cannot support as many offspring as they generate.
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where do the processes happen?
a. photosynthesis as a whole:
b. light-dependent reactions:
c. calvin cycle:
Answer:
Explanation:
a. Photosynthesis as a whole: Photosynthesis is a process that occurs in the chloroplasts of plant cells. Chloroplasts are organelles found in plant cells that are responsible for capturing light energy and converting it into chemical energy through the process of photosynthesis.
b. Light-dependent reactions: The light-dependent reactions of photosynthesis take place in the thylakoid membrane of chloroplasts. These reactions involve the absorption of light by pigments, mainly chlorophyll, which then transfer the energy to specialized protein complexes. These protein complexes then generate ATP and NADPH, which are used in the next stage of photosynthesis.
c. Calvin cycle: The Calvin cycle, also known as the dark reactions, take place in the stroma of chloroplasts. The stroma is the fluid-filled area outside the thylakoid membrane. The Calvin cycle is where the chemical energy generated during the light-dependent reactions is used to fix carbon dioxide into glucose and other sugars, using the energy stored in the ATP and NADPH molecules.
In summary, photosynthesis, the process that allows plants to convert light energy into chemical energy, occurs in the chloroplasts of plant cells. The light-dependent reactions take place in the thylakoid membrane and the Calvin cycle takes place in the stroma of the chloroplasts.
Damage to ependymal cells would most likely affect the formation of myelin sheaths. repair of axons. formation of cerebrospinal fluid. transport of neurotransmitters within axons. formation of ganglia.
Damage to ependymal cells would most likely affect the formation of myelin sheaths. Formation of cerebrospinal fluid.
Ependymal cells are a type of glial cell that line the ventricular system of the brain and the spinal cord.
They are responsible for producing and circulating cerebrospinal fluid (CSF), which plays important roles in maintaining the structural integrity of the brain and spinal cord, as well as providing a medium for the exchange of nutrients, waste products, and neurotransmitters between the brain and the blood.
Damage to ependymal cells would most likely affect the formation of cerebrospinal fluid, not myelin sheath formation, repair of axons, transport of neurotransmitters within axons, or formation of ganglia.
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What will be the volume of an object that mass is 100 g and density is 0.8 G/mL
This calculator will calculate object density based on the mass and volume inputted, and it will display two conversion levels for mass and density.
Was conversion a technical term?
What is the definition of conversion? Biblically speaking, conversion refers to a turning—a spiritual moving toward Christ in faith and away from sin through repentance. It is a drastic veering off of one road to pursue a completely different one.
What different sorts of conversion are there?
Conventional conversion, no translation, and user-defined non - standard conversion are the three different forms of conversion that are available. A conversion factor is a ratio expressed as a fraction that equals.
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What is the concentration of an aqueous solution that contains 1. 5 moles of nacl in 500. Milliliters (0. 5 l) of this solution?.
Answer:
The molarity of the solution is 5.1 mol/L .
what does the salivary glands do in the digestive system?
The salivary glands function to produce saliva which contains amylase for digesting carbohydrate food.
What is the role of the salivary gland?The salivary gland is located below our jaw. There are three types of salivary glands; sublingual, submandibular, and parotid.
Salivary glands have a role in saliva production. This saliva will lubricate our mouth, maintain the pH balance and keep our mouth clean. Besides that, In the digestion process, saliva itself contains an enzyme named amylase which breaks down carbohydrates (starch) into smaller ones. It results in the food will be easier to be further digested in the next organ.
Thus, with the presence of saliva produced by the salivary gland, mouth becomes the first place to digest carbohydrate food.
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Adhesion is best described as _____.
Adhesion can be best described as the force of attraction between two substances.
When it comes to the forces of attraction, there can be two types of forces, that is, cohesive forces and adhesive forces. Cohesive forces are those forces which bind two molecules present in the same substance. For example, a drop of water consists of only water molecules which are bound together.
Adhesion or adhesive forces are the forces of attraction between the molecules of different substances. For example, when we will the water in a glass up to the brim, the water does not fall due to the forces between the glass and water.
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What is the MOST likely difference between ancient and modern biotechnology?
A. Ancient biotech was the result of accidents.
B. Ancient biotech focused on medicine.
C. Modern biotech occurs in a laboratory.
D. Modern biotech focuses on agriculture.
Modern biotech occurs in a laboratory. So , the correct option is (C).
What is Modern Biotechnology?Modern biotechnology is used to distinguish new applications of biotechnology, such as genetic engineering and cell fusion, from more traditional methods such as breeding, or fermentation.
This technology involves creating useful products from whole organisms or parts of organisms, such as molecules, cells, tissues, and organs. This includes genetically modified plants and animals, cell therapy, and nanotechnology. Modern biotechnology includes genetic engineering, bioinformatics and bioprocess engineering.
Thus, Modern biotech occurs in a laboratory. So , the correct option is (C).
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Option C best reflects the primary difference between ancient and modern biotechnology.
The most likely difference between ancient and modern biotechnology is:
C. Modern biotech occurs in a laboratory.
Ancient biotechnology often emerged as a result of accidental discoveries or observations of natural phenomena, whereas modern biotechnology is a more deliberate and controlled process conducted in laboratory settings.
Modern biotechnology involves the use of advanced techniques, tools, and scientific knowledge to manipulate and engineer biological systems for various purposes, including medicine, agriculture, and industry.
While ancient biotechnology may have had a focus on medicine, modern biotechnology has a broader scope and encompasses various applications beyond medicine, including agriculture, environmental conservation, and industrial processes.
Therefore option C best reflects the primary difference between ancient and modern biotechnology.
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Specifically, where (location and which step) the Sugar is made (and chemical formula)
Specifically, where (location and which step) Oxygen is made (and chemical formula)
How does Oxygen exit the cell for photosynthesis?
Specifically, where (location and which step) Carbon Dioxide is used (and chemical formula)
Where is Water (location and which step) used (and chemical formula)
How does water get into a plant?
Where in the organelles Photosynthesis occurs?
What are the types of products of Photosynthesis (glucose, cellulose, starches etc.)
The products of photosynthesis are glucose (C6H12O6), oxygen (O2), and water (H2O). Glucose is the primary product of photosynthesis, and is used by the plant as an energy source.
What is glucose?
Glucose is a type of sugar found in the blood. It is used as a source of energy in the body, and is produced by the digestion of carbohydrates. Glucose is also a key component of many metabolic pathways in the body. It can be used to produce energy directly, or it can be converted into other forms of energy such as fat or glycogen. Glucose is an important source of energy for the body, and is essential for proper functioning of its organs and tissues. It is also important for the metabolism of fats and proteins, and is essential for brain and muscle functioning. It is also essential for the prevention of hypoglycemia, which can be dangerous if left untreated.
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Why is type O negative blood considered the universal red blood cell donor?
It has all three types of antigens.
It has all three types of antibodies.
It lacks all three types of antigens.
It lacks all three types of antibodies.
Type O blood type is the only blood group that is safe to utilize in an emergency when a patient's blood group is unknown. The fact that it works with all blood groups is the explanation.
What are the four main blood type categories?
The four main blood types (groups) are A, B, AB, and O. The genes you inherited from your parents define your blood type. There are a total of 8 blood types, each of which can be either Right hand drive positive or Right hand drive negative.
What blood type is the rarest?
Only 1% of our contributors have AB negative, the rarest of a seven major blood types. Although being in little supply, there is
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How is the human proteome project different from the human genome project
The human proteome project is to experimentally observe all of the proteins produced by the sequences translated from the human genome while the human genome project was to generate the first sequence of the human genome is to generate the first sequence of the human genome.
What is a Genome?This is referred to as the entire set of DNA instructions found in a cell and it consists of 23 pairs of chromosomes located in the cell's nucleus.
The human proteome project was different from the human genome project such that the former was to experiment on the proteins produced by the sequences translated from the human genome while the latter was to generate the first sequence of the human genome.
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Which option describes a disadvantage of genetic engineering in agriculture?
Answer: (*Cracks Knuckles*)
Explanation: Food safety, environmental effects, and socioeconomic issues,cross-pollination, pest resistance, human health, the environment, the economy, and productivity.
Baed on the propoed ignaling pathway, predict the relative amount of phophorylated to unphophorylated kinae D
in the Brec-WT
cell when the cell are grown in nutrient broth lacking B
The relative amount of phosphorylated kinase D will be less than the unphosphorylated Kinase D protein as lacks the first messenger B.
It is given that protein A is involved in the stimulation of growth and blood vessels form in the cell.
In presence of first messenger B:
The process takes place when signal B is present in the nutrient broth, this B attaches to Brec wild protein which initiates the signaling cascade.In presence of signaling, there is phosphorylation of D (inactive), which is converted into phosphorylated D (activated ).In absence of the first messenger B:
So if signal B is absent in the nutrient broth, then there will be no activation of the Brec receptor and no phosphorylation of the D protein. In this condition, the phosphorylated D amount will be less in the cell than the unphosphorylated D.
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Compare the horseshoe crab that lives today with the fossil that is millions of years old. What kind of habitat do you think its fossilized ancestor lived in? Explain your answer.
Answer: Horseshoe crab fossils have been estimated to be 445 million years old. They co-evolved with other primitive arthropods called trilobites, a long-extinct close relative of the horseshoe crab, in the shallow seas of the Paleozoic Era (540-248 million years ago).
What was Mendel's first conclusion about pea plants?
Answer:
Mendel found that crosses between parents that differed for one trait produced F1 offspring that all expressed one parent's traits.
Explanation:
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whats better cats or dogs? why
Answer:
dogs
Explanation:
they can be trained way easier than cats. and they make a great companions bc if you treat them right they will love and protect you. unlike cats who would rather protect themselves
The process of mitosis is the same in plant and animal cells until the division of the cytoplasm. At this stage, plant cells develop ___________.
At the stage of cytoplasm division in the process of mitosis, plant cells develop a cell plate, also known as the cell plate, also known as the cell plate. This structure eventually will form the cell wall between the two daughter cells. Animal cells do not develop a cell plate and instead rely on contractile fibers in the cell called microfilaments to pull the chromosomes apart and physically separate the cytoplasm of the cell.
The transfer of genes from one population to another drives the changes that occur in populations a permanent change in the dna sequence of a gene the random change in the frequency of an allele in a population.
The mechаnism to the following stаtements аre:
а. The trаnsfer of genes from one populаtion to аnother is gene flow.
b. Drives the chаnges thаt occur in populаtions аre due to nаturаl selection.
c. А permаnent chаnge in the DNА sequence of а gene is mutаtion.
d. The rаndom chаnge in the frequency of аn аllele in а populаtion is genetic drift.
Evolution is the process by which populаtions of orgаnisms chаnge over generаtions. Genetic vаriаtions underlie these chаnges. Genetic vаriаtions cаn аrise from gene vаriаnts (аlso cаlled mutаtions) or from а normаl process in which genetic mаteriаl is reаrrаnged аs а cell is getting reаdy to divide (known аs genetic recombinаtion).
Genetic vаriаtions thаt аlter gene аctivity or protein function cаn introduce different trаits in аn orgаnism. If а trаit is аdvаntаgeous аnd helps the individuаl survive аnd reproduce, the genetic vаriаtion is more likely to be pаssed to the next generаtion (а process known аs nаturаl selection).
Your question is incomplete, but most probably your full question was
Identify the mechanism discussed below.
a. The transfer of genes from one population to another:
b. Drives the changes that occur in populations:
c. A permanent change in the DNA sequence of a gene:
d. The random change in the frequency of an allele in a population:
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How many different mutations have been identified for cystic fibrosis?
As of 2019, more than 2,000 different mutations have been identified for cystic fibrosis.
Cystic fibrosis (CF) is a genetic disorder that impacts the lungs, digestive system, and other organs of the body. It is caused by a mutation in a gene known as the cystic fibrosis transmembrane conductance regulator (CFTR). This gene produces a protein that controls the movement of salt and water in and out of cells. When the CFTR gene is mutated, the protein cannot function properly, leading to thickened and sticky mucus that can clog the lungs and trap bacteria.
The exact number of CFTR mutations is unknown, but researchers have identified more than 2,000 different mutations associated with cystic fibrosis. Some of these mutations are more common than others, but all of them can cause the same symptoms. The severity of the symptoms, however, can vary depending on the specific mutation.
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What are the possible blood types of the child if the father has AB blood type and the mother has a blood type?
If the father has AB blood type and the mother has a blood type, the possible blood types of the child are A, B, AB and O.
The blood type of a child is determined by the combination of genes inherited from the mother and father. This is because the AB blood type is a combination of both A and B blood types and the "O" blood type is the universal donor blood type that can donate blood to recipients of any ABO blood group.
So any combination of those genes can result in one of the four possible blood types.
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Your question is incomplete but probably, the complete question was:
What are the possible blood types of the child if the father has AB blood type and the mother has a blood type?
A
B
AB
O
Either A or B
The first step taken when looking through the oculars of a microscope is to adjust the oculars until only one circle of light can be viewed.
True
False
Answer:
True
Explanation:
If multiple circles of light can be seen when looking through the lenses, they should be adjusted a position that produces just one circle of light. This allows the sample to be seen clearly when the next steps are taken, such as adjusting the magnification and focus.
WILL MARK BRAINILEST!! PLEASE HELP
You can measure humidity in your own backyard. (10 points)
A. What tool could you use to measure humidity in your backyard? (4 points)
B. What steps should you follow to measure humidity with this tool? (4 points)
C. What result will let you know the air has a low humidity? (2 points)
Technically this is Earth Science
Section 2: Conduct internet research on your selected ecosystem to help you generate a list of three criteria and two constraints. Your criteria and constraints should consider relevant factors to the problem, such as costs, reliability, safety (to humans and wildlife), human needs, environmental impact, local biodiversity, and the aesthetics of the area. List the criteria in order of most to least important and assign each to a related sub-problem. In the rationale column, explain why you placed your criteria in the order you selected.
Please use the Kitakami River Region
The largest environmental problem brought on by fertiliser use is water contamination from nitrate and phosphate. The nitrogen from manures and fertilisers is eventually converted into nitrates by bacteria in the soil.
What is an ecosystem?Plants, animals, and other species interact with their surroundings, the weather, and other elements in an ecosystem to produce a "bubble of life." Ecosystems cohabit with biotic and abiotic factors, or nonliving elements.. Biotic factors include plants, animals, and other species. A group of living things (plants, animals, and bacteria) in a certain location is referred to as an ecosystem.Eco denotes a geographical area on the world, whereas system denotes the organising components.
Why is ecosystem important?Healthy ecosystems maintain our soil's fertility, clean the air, control the climate, recycle nutrients, and give us food. All civilizations are built on them, and they also power our economies.
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