Covering fossils in plaster is a common technique used to protect and preserve them. The main reason for covering fossils in plaster is to stabilize and protect the fossil from further deterioration. Fossils are often found in fragile and delicate states, and plaster provides a protective layer that helps to prevent further erosion or damage caused by exposure to the elements or handling. Plaster also provides a hard, durable surface that makes it easier to transport and handle the fossils without causing additional damage.
Additionally, the plaster can be used to make a mold of the fossil. This allows for a replica to be made which can be used for research, study or display, without risking damage to the original fossil.
Finally, plaster is also useful for reconstructing missing or broken parts of the fossil, which can make it easier to study and interpret the fossil.
In summary, covering fossils in plaster is necessary to protect and preserve them, to make a replica, and to reconstruct missing or broken parts.
When did earthworms first appear?
Leeches and earthworms are two kinds of worms that are well-known to humans and are categorized as annelids. Among the most numerous and diverse animal species now living, annelid worms originated in the ocean over 500 million years ago but have since colonized soils on land.
Annelids have left a rich fossil record in unique and uncommon geological sites where elements like skin, intestines, and muscle tissue have been preserved, despite having fragile bodies that quickly succumb to decomposition upon death. My research focuses on fossils like these, and I just described the oldest annelid worm, which belonged to a group that is still living and existed in what is now China around 514 million years ago.
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Some indigenous people in polar climates are an exception when it comes to skin
color, having darker skin than other populations in that area. How can this be
explained?
they have diets high in Vitamin D
they have diets low in Vitamin D
they have diets high in folic acid
they have diets low in folic acid
Answer:
They have high folic acid diets
Explanation:
Folic acid helps regulate melanin production.
how many wisdom teeth does the average adult have?
Answer: An average adult has four wisdom teeth.
Explanation:
The normal adult will have four (or fewer) wisdom teeth. Some people however do have extra wisdom teeth. These people have an additional tooth or set of teeth. These extra wisdom teeth are referred to as “supernumerary” teeth.
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Doctors can perform tests called biopsies to determine whether cells in an area of tissue are cancerous or not. Cells are removed from the area, sometimes by a punch biopsy, and then viewed under a microscope. Based on what you know about the regulation of cell growth, make a list of questions you would ask as you observe the cells. Type your answer here.
Answer:
I would ask these questions to myself;
Is the cell have normal interphase?
Is it use a normal level of glucose or energy?
Is it have any abnormal organelle?
Is the cell divide at the normal rate?
Explanation:
Antimicrobials that inhibit the growth of microorganisms have the suffix:
The prefix "-static" is used to identify antimicrobials that prevent bacteria growth. A killing action is indicated by the suffix "-cidal."
An antiseptic is a substance that kills or slows the growth of microorganisms while being safe for use on human tissue. An agent that lowers bacteria populations to a safe level is known as a sanitizer. An antibiotic is a metabolic byproduct created by a single microbe that prevents or eliminates the growth of other bacteria.
Some, like penicillin, kill germs by rupturing the cell wall of the organism. Others, like tetracycline, prevent bacteria cells from producing the proteins or nutrients they need to survive or from reproducing.
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Select which statements are a part of natural selection.1. organisms better adapted to their environment tend to survive2. organisms better adapted to their environment tend to reproduce and increase in number3. organisms pass on their traits to succeeding generations.4. over time, favorable traits become more common in a population
All four of the given statements are true as a result of these postulates.
1. Adaptable organisms are more likely to survive in their environment.
2. Organisms with better environmental adaptations are more likely to reproduce and proliferate.
3. Characteristics of an organism are passed on to subsequent generations.
4. In a population, advantageous features gradually spread.
Darwin introduced the notion of natural selection. The following postulates were provided by Darwin in his theory of natural selection:
1. Different individuals within a species exist.
2. This variation has some heritable components.
3. Individuals with the most advantageous mutations typically have better survival rates and more progeny.
4. People have a propensity to reproduce and have more children than the environment can sustain.
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Help me please I need this soon
Answer:
Below
Explanation:
18. A nuclear envelope forms around each haploid chromosome set, before cytokinesis occurs, forming two daughter cells from each parent cell, or four haploid daughter cells in total.
19. The primary functions of the nucleus are to store the cell's DNA, maintain its integrity, and facilitate its transcription and replication.
20. True
On the basis of the hemoglobin similarity, what organisms appear to be most closely related to humans? Explain your answer
Chimpanzees appear to be closely related to humans. +chimpanzee aming hemoglobin protein
What is hemoglobin ?Red blood cells include a protein called haemoglobin, which distributes oxygen to your body's organs and tissues while returning carbon dioxide to your lungs. A low red blood cell count indicates a low haemoglobin level, which can be determined by a haemoglobin test (anemia).
Hemoglobin levels may fall if an illness or condition interferes with your body's capacity to make red blood cells. You may experience extreme fatigue and weakness if your haemoglobin level is low, which indicates that your body isn't getting enough oxygen.
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I need help with this question
+ 4. The equation below represent a metabolic process that occurs in the mammalia Ammonia +carbon (IV)oxide Emme organic compound Q+ water a)Name the process in the equation above (1mk) b)Name the organ in which the process in (a) above occurs in mammals c)why is the process in (a) above occurs in mammals (1mk) d)identify the organic compound Q e) Explain the fate of organic compound Q (1mk) f)Explain the source of ammonia in the organ named in (b) above (1mk) cha ctoristics of living organisms shown by each of the follow
The name of the process in the equation above is the formation of urea
b. The name of the organ in which the process in (a) above occurs in mammals is the liver
c) The process in (a) above occurs in mammals in order to remove toxic waste
d) The organic compound Q is urea
e)The organic compound is removed from the body in the form of urine,
f ) The source of ammonia in the organ named in (b) above is from protein digestion
g) The characteristic of living organisms shown is excretion.
What is urea formation?Excess ammonia is converted into urea in the mitochondria of liver cells by the urea cycle, also known as the ornithine cycle. The urea is produced, then it enters the bloodstream, goes through the kidneys' filtering process, and finally is eliminated in the urine.
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What is the % yield if 4 moles of hydrogen is reacted with 3 moles of oxygen and produces 3 moles of water?.
75 is the % yield if 4 moles of hydrogen is reacted with 3 moles of oxygen and produces 3 moles of water. chemically water is known as H2O.
A water patch is made up of two hydrogen tittles and one oxygen snippet. But you can not just stick two hydrogen tittles together and call it a day. The factual process of producing water is a little more complicated 2H2O Energy = 2H2 O2. Two motes of diatomic hydrogen( H2) must be combined with one patch of diatomic oxygen( O2) to produce two motes of water( H2O)( O2). During the process, energy will be released. This response( 2H2 O2 = 2H2O Energy) has been known for over two centuries, but no one has succeeded in making it work in a homogeneous result until now.
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Show how the alleles for tall plant height and short plant height are segregated from each other during gamete formation.
T
t
Tall pea plant
TT
Short pea plant
tt
The results of the crossing indicate that all of the offspring's genotypes will be Tt.
Different genotypes are produced in the progeny of a specie cross. The total number of genes that an organism has inherited from both of its parents is referred to as genotype.
As a result of the species crossing, T t = Tt.
T × t = Tt
T × t = Tt
T × t = Tt
As a result, all of the offspring's genotypes will be Tt.
Plant? What do you mean?A plant is a living entity with a stem, leaves, and roots that develops in the soil. Exotic plants need to be watered as often as necessary. Alternative words: flower, shrub, veggie, herb more words for "plant"
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What would happen if the members of one homologous pair did not segregate to opposite poles, but instead both went to the same pole? How many chromosomes would be found in the four gametes produced?
If the members of one homologous pair did not segregate to opposite poles, but instead, both went to the same pole, then it would lead to trisomy.
What is a chromosome?A chromosome is a lengthy DNA molecule that contains all or a portion of an organism's genetic code. The very long, thin DNA fibers in most chromosomes are covered with packing proteins; in eukaryotic cells, the histones are the most significant of these proteins.
DNA may be precisely duplicated during these cell divisions because of chromosomes.
If the members of one homologous pair did not segregate to opposite poles, but instead, both went to the same pole, then it would lead to trisomy. Hence, two chromosomes lack chromosomes, while two chromosomes will have two copies of chromosomes.
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Many people with mutated alleles that are associated with diseases, including some cancers, do not actually develop the disease. How is this possible?
This is possible due to genetic predisposition which means that there is an increased chance that a person will develop a disease based on their genetic makeup.
What genes are mutated to cause cancer?The most commonly mutated gene in people with cancer is p53 or TP53. More than 50% of cancers involve a missing or damaged p53 gene. Most p53 gene mutations are acquired.
Germline p53 mutations are rare, but patients who carry them are at a higher risk of developing many different types of cancer. When the functions of these genes are mutated in order to express different proteins, the disease or cancer is exposed in the individuals.
Therefore, the influence of genetic mutation with respect to disease is possible due to genetic predisposition which means that there is an increased chance that a person will develop a disease based on their genetic makeup.
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What is an EMTs responsibility?
EMTs responsibility includes Responding to 911 calls for emergency medical help, such as doing CPR or bandaging a wound.
In emergency medical situations, paramedics and emergency medical technicians (EMTs) provide care for the ill and injured. The prompt response and expert care that these employees give frequently determine the lives of people. Responding to emergency calls, EMTs and paramedics provide medical care and transport patients to hospitals.
EMTs and paramedics are dispatched by a 911 operator to the emergency scene, where they frequently collaborate with police and firefighters.
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matter changes form during a change of state but it is ____
which of the following is not a normal characteristic of the normal microbota of the urinary and reproductive system
The typical microbiota are more prevalent in the male urethra than the female urethra.
briefly:-In most cases, the urethra is axenic. In the urethra, particularly in the distal stop, germs are usually present. At specific times during the menstrual cycle, the relative quantities of various species of common vaginal microbiota may alter. By out-competing harmful microbes, the normal microbiota shield us from disease. often connected to sickness symptoms.
What three components of urine might be found in a patient with a urinary tract infection?UTIs are indicated by the presence of bacteria in the urine. A urinary tract infection may be indicated by the presence of yeast cells or parasites (such as the parasite that causes trichomoniasis). The sample could not be as pure as it should be if there are squamous cells present.
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A scientist was studying a population of elephants. The first year, he counted a population of 80. Over the next eight years, the population’s numbers were 94, 100, 103, 110, 125, 120, 125, 120. What appears to be the carrying capacity for this population?
120
124
125
126
At any given time, this population could accommodate 125 people.
Which population do you refer to?Any whole group that shares at least one trait is referred to be a population. People do not make up all populations. Populations can include, but are not limited to, people, animals, groups, organizations, buildings, houses, trucks, farms, and things.
What does "population mean" mean exactly?The average calculated from the entire group, distribution, or population is known as the population mean. It is computed by dividing the entire population of variables by the sum of all the variables in the population. The population mean is shown here as. The population's observations are combined to generate X.
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Answer: C. 125
Explanation: I got it right!
A dog's cells carry out many processes at once. Some cells are involved in muscle contraction and some are involved in growing fur.
Which statement tells the most important factor that allows cells to keep accomplishing their many processes?
a. Cells constantly produce usable energy in the form of ATP
b. Cells contain genes from two individuals, and the combination of genes result in genetic variation
c. New cells are always being made from old ones in the process of meiosis.
d. The phospholipid bilayer of the cell membrane is selectively permeable.
The statement that tells the most important factor that allows cells to keep accomplishing their many processes is that cells contain genes from two individuals, and the combination of genes result in genetic variation. So the correct option is B.
What is genetic variation?Genetic variability is a characteristic that individuals have so that they have a difference in genotypes that helps the population to differentiate. The DNA will be different in each individual and this variability allows us to create cells for each region of our body with different types of activities that they must carry out.
Therefore, we can confirm that the correct option is B. Cells contain genes from two individuals, and the combination of genes result in genetic variation.
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Which sentence best describes a forensic scientist's role?
O A.
B.
A forensic scientist analyzes blood, tissue,
and other samples to assist law enforcement.
O D.
A forensic scientist maintains the equipment
used to view samples in the laboratory.
OC. A forensic scientist creates artificial organs
out of specific materials and metals.
A forensic scientist assists a biological scientist
in studying bacteria and viruses.
Which statement best describes Nothe relationship between photosynthesis and resperation
In photosynthesis, plants convert carbon dioxide and water into oxygen and glucose, in respiration, it converts oxygen and glucose into water and carbon dioxide.
What is the relationship between photosynthesis and respiration?Photosynthesis is the process to make food glucose, and also evolving oxygen as the product. This process depends on the light.
Cellular respiration is the metabolic process in which food glucose is a breakdown to produce energy and produce carbon dioxide and water as the product.
Therefore, in photosynthesis, there is a synthesis of glucose and in respiration, there is a breakdown of the glucose.
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How did earthworms get to North America?
With the first European settlers in North America in the 1600s, new earthworms started to arrive. They crossed over in dry ship ballast or root balls.
Second colonization was taking place under the feet of the British, French, Spanish, and Dutch as they conquered the American continent. In the majority of the United States, almost every earthworm originated elsewhere. Native earthworms were nearly exterminated by glaciers from a Pleistocene ice period more than 10,000 years ago. Few made it farther south. Today, however, almost all earthworms found north of Pennsylvania are introduced species.
Earthworms are often welcomed in the soil by gardeners. However, their invasion has caused significantly more damage to forests.
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Which law explains that genes are separated from each other during gamete formation and are recombined during fertilization?
The law of segregation states that the genes are separated from each other during gamete formation and are recombined during fertilization.
Law of segregation was the second law of inheritance and presented by Mendel. It explained that the genes existed in a pair of alleles and during gamete formation, only one of the two alleles was received by a single gamete.
Fertilization is the process of the fusion of the male and the female gametes. It results in the formation of zygote that is diploid in nature as both the gametes are haploid. The process of fertilization may occur inside the female body or on the external environment.
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Which sentence from the article supports a MAIN idea from the article?
(A) In modern America, we have access to fresh water every day.
(B) Each time we turn on the tap, plumbing systems bring this important resource into our homes.
(C) The remaining water is salt water, such as what is found in the ocean.
(D) This lack of water affects business and politics in different places.
Answer:
could you upload the article with the question please?
Explanation:
Clue 1: A unicellular organism Clue 2: Lives in the human body What is the correct classification of the organism
Based on the two clues provided, it is likely that the organism is a type of unicellular microbe that lives within the human body. There are many different types of microorganisms that can reside within the human body, including bacteria, fungi, and viruses. Some examples of unicellular microorganisms that live within the human body include:
- Bacteria such as Staphylococcus and Escherichia coli
- Fungi such as Candida albicans
- Viruses such as the herpes simplex virus and the human papillomavirus (HPV).
It is worth noting that depending on the context and further information, other types of unicellular organisms such as protozoan can also be living inside the human body.
Alkanes contain the maximum possible amount of hydrogen, they are known as being __________.
Alkanes contain the maximum possible amount of hydrogen, they are known as being saturated hydrocarbon
Why are alkanes called saturated hydrocarbons?Each alkane's carbon skeleton is fully saturated when all four of its valencies are bound to either hydrogen atoms, carbon atoms, or both of them through a single covalent bond. Alkanes are hence referred to as saturated hydrocarbons.
Alkanes are a homologous sequence, why?
A homologous succession of alkanes is formed. The general formula for the alkanes is the same as for other homologous series. in their molecular formulas from nearby compounds by CH 2. Alkanes have a variety of uses in manufacturing. They serve as the raw ingredients for the synthesis of alcohols, polymers, lacquers, detergents, and fuels.
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Combinations of mutations that would tend to allow the cell cycle to become unregulated.
Combinations of mutations that can cause the cell cycle to become irregular are oncogenes and tumor suppressor genes.
What is a cell?
The cell is the smallest unit of an organism or living thing. The cell is the basic structural and functional unit of organisms, just like the atoms in a chemical structure. Cells can determine the durability of living things.
Oncogenes normally function to push the cell cycle to a more advanced stage. The normal cell cycle becomes disordered due to mutations in proto-oncogenes (into oncogenes) and tumor supersor genes that cause cellular transformation.
Tumor suppressor genes that normally function to inhibit the progression of the cell cycle become inactive and cause uncontrolled cell division.
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What is the structure that contains the genetic material of an organism encoded into DNA?
The majority of genetic material is DNA, however some, like retroviruses, also contain RNA. For the most part, RNA functions as a messenger in higher species.
Scientists explain that this is because DNA and RNA have different molecular structures. A molecule needs to possess specific qualities in order to be regarded as genetic material.
Replication is the capacity to duplicate something.It need to be both chemically and structurally stable.Evolution should be possible due to mutation.It must have a hereditary structure that adheres to "Mendelian inheritance."The name "DNA" refers to deoxyribonucleic acid. It is an organic substance with a distinctive molecular make-up. All prokaryotic and eukaryotic cells contain it.
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1. SELECT ONE NATURAL HAZARD IN THE PICTURE AND SUGGEST WAYS ON HOW PEOPLE MUST BE PREPARED TO FACE THE HAZARD IN TERMS OF THE DIFFERENT PERSPECTIVES GIVEN BELOW
CHOSEN HAZARD: VOLCANIC ERUPTION
Pa help po pls... I really need help po. I'll mark brainliest po who answered po.
Example: Earthquake
The natural hazard chosen is earthquake and ways in which people can prepare for it is by making an emergency plan and also providing safety measures to avoid injuries.
What is an Earthquake?This is referred to as the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere which creates seismic waves.
The ways in which people can prepare for it is by making an emergency plan so as to ensure that no one is stranded and also providing safety measures to avoid injuries caused by the falling and collapse of substances in the affected area.
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A molecule has been isolated from a cell. The molecule is found to be in a ring shape made up of carbon, hydrogen, and oxygen atoms in a 1:2:1 ratio. Choose all the statements that apply to this molecule.
Based on the information given, the following statements likely apply to the molecule:
- The molecule is an organic compound, as it contains the elements carbon, hydrogen, and oxygen.
- The molecule is likely a carbohydrate, as many carbohydrates have a ring shape and a 1:2:1 ratio of carbon, hydrogen, and oxygen atoms.
- The molecule is likely a sugar, as many sugars are ring-shaped carbohydrates
- The molecule is likely a monosaccharide. Monosaccharides are simple sugars and are the building blocks of more complex carbohydrates like disaccharides and polysaccharides. They are composed of C, H, and O in a ratio of 1:2:1, fitting the information provided.
- The molecule is likely to be a cyclic compound, due to the ring shape made up of atoms.
It is important to note that this information is not enough to definitely identify the molecule, there are several compounds that can fit in this description such as Glucose, Fructose, and Ribose. Additional information and testing would be needed to definitively identify the molecule.