Allele frequencies in a population may change due to four fundamental forces of evolution: Natural Selection, Genetic Drift, Mutations and Gene Flow. Mutations are the ultimate source of new alleles in a gene pool. Two of the most relevant mechanisms of evolutionary change are: Natural Selection and Genetic Drift.
This story showed an example of convergent evolution. Convergent evolution is the process whereby organisms that are not closely related independently evolve similar traits as a result of having to adapt to similar environments or ecological niches.
What is in the story ?In this story, the two species of birds, the crows and the jays, evolved to look similar as a result of living in the same environment and competing for the same resources.
The two species evolved to look similar in order to blend in with their environment, making it difficult for predators to distinguish them from one another. This allowed them to survive and thrive in the same environment.
Therefore, This example of convergent evolution is a perfect example of how species can evolve to look similar in order to survive in the same environment. It also shows how competition for resources can drive species to evolve similar traits in order to survive.
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Compact Bone is hard and dense but, it is not solid. It is filled with holes and has small canals for blood vessels and nerves.
True
or
not?
The compact bone is hard and dense, but it is not solid; it is filled with holes and has small canals for blood vessels and nerves, which is a true fact as the compact bone is one of the dense bones present in the body.
What is the significance of compact bone?Compact bone is a dense, hard bone tissue that provides structural support and protection to the body, and it is also involved in the storage of minerals, such as calcium, which is important for the strength and density of bones. Haversian canals are present in the compact bone and contain blood vessels, nerves, and other tissues that support the bone.
Hence, compact bone is hard and dense, but it is not solid; it is filled with holes and has small canals for blood vessels and nerves, which is a true fact as the compact bone is one of the dense bones present in the body.
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Why did the elk population become a problem in Yellowstone?
Question 1 options:
Elk were introduced to limit tree growth.
There were not enough elk to support local hunters.
Elk were on the endangered species list and could not be killed.
The elk population was destructive because there were no predators.
Answer:
The elk population was destructive because there were no predators.
Explanation:
There was a decline in wolves.
Answer:
The elk population was destructive because there were no predators
Explanation:
There was a decrease in hunters so the amount of elk grew.
How important do you think technology is to agriculture? Why is it important that the agriculture industry stay current and evolve with technology? 5 sentences
Answer with Explanation:
Here's an example answer with 5 sentences.
Technology is very important to agriculture. It allows a higher crop yield and lowers the quantity of water, fertilizer and pesticides being used. The agriculture industry should stay current and evolve with technology in order to ensure a more efficient way of farming with lesser impact on the environment. This also ensures a safer growing condition for animals and plants, thereby affecting the quality of food that people eat. This makes agricultural businesses more profitable while maintaining an eco-friendly society.
If a rock has a mass of 42 grams and a volume of 6 ml, what is its density?
Steps:
m = V × ρ
= 6 milliliter × 42 gram/cubic meter
= 6.0E-6 cubic meter × 42 gram/cubic meter
= 0.000252 gram
= 2.52E-7 kilogram
High salinity, or salt content, is a problem for many soils. Which of the
following best describes the relationship between high levels of salt and
environmental water such as rainwater?
A. High salinity results in too little water.
B. High salinity results in too much water.
C. Too much water results in high salinity.
O D. Too little water results in high salinity.
SUBMIT
Answer:
D. Too little water results in high salinity
Answer:
Too little water results in high salinity.
Explanation:
I just did the quiz and I got it right.
Determine if the gene for this trait resides on an autosome or sex chromosome. Use evidence to support your answer
Answer:
autosome
Explanation:
if it were on a sex chromosome then either more females would have it or more males would have but it's almost split evenly
The lungs absorb dash gas and excrete waste carbon dioxide
Answer:
Oxygen
Explanation:
What is natural selection and what are its effects on allele frequencies? (Due at 11:59)
Fill in the boxes with the mutant DNA from the Normal DNA
What will happen to this cell?
A) it will shrink
B) nothing
C) it will explode
The cell shown in the image is placed in a solution of 0.5 M whereas the internal concentration of the cell is 0.1 M, hence the solution is hypertonic and the cell will shrink.
The correct option is A.
What is a hypertonic solution?A hypertonic solution is a solution with a higher concentration of solutes (e.g. salt, sugar, or other molecules) compared to another solution.
When a cell is placed in a hypertonic solution, water molecules will move out of the cell and into the surrounding solution, which can cause the cell to shrink or even collapse. This is because the concentration of solutes inside the cell is lower than that of the hypertonic solution, so water diffuses out of the cell in an attempt to balance the concentration on both sides of the cell membrane.
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A boy is anchored to the ocean floor a large wave approaches the boy how will the boy move as the wave goes by
Answer:
The buoy will move because the wave will push it.
Explanation:
what happens if you just change the elasticity of the objects?
Answer:
Cuando un material elástico que contiene fluido se deforma el retorno del material a su forma original se retrasa en el tiempo y es más lento para restaurar a su posición original. Materiales viscoelásticos exhiben tanto amortiguamiento viscoso y una respuesta elástica durante la deformación.
Natural selection effects on allele frequencies ( write in your OWN words)
Answer:
natural selection cause a change in an allele frequencies over time, therefore this increases the likelihood that certain individuals with specific alleles will survive to a reproductive age, enabling them to pass in their alleles to their offspring.
For the light stage of photosynthesis to occur, sunlight must be present. At
this time, water is split to produce which of the following?
Answer:
Explanation:
Water is split into oxygen (O2), protons (which are then used to form ATP), and electrons (which travel down the electron transport chain)
Name the type of the leaf when its lamina is entire or when incised?
Answer:
compound
Explanation:
A leaf is said to be simple, when its lamina is entire or when incised, the incisions do not touch the midrib. When the incisions of the lamina reach up to the midrib breaking it into a number of leaflets, the leaf is called compound
what does aa mean in bioligy
Answer:
aa means (atomic absorption) in bioligy
Explanation: hope this helps
Answer:there is not an aa in bioligy so ye
Explanation:
Which scientist would agree with this statement: Giraffes all had short necks originally. Individual giraffes stretched their necks for food. The "acquired" long necks from stretching were then passed on to the offspring. The giraffe population became long-necked please help I need to figure out which scientist it is
Answer:
Jean-Baptiste de Lamarck
Explanation:
His two principles were "use and disuse" and "inheritance of acquired characteristics." The latter is what the statement is referring to.
Answer:
Lamarck
In the case of a giraffe, Lamarck believed that giraffes once had short necks that got progressively longer as members of each subsequent generation stretched their necks as long as they could. In doing so, Lamarck believed that each generation would grow slightly longer necks and pass that trait onto their offspring.Jan. 16, 2018
Explanation:
If the Carbon-14 found in a mastodon tooth went through 8 half lives, how old is the tooth? To help find the answer, use 5,000 years for the half life of Carbon-14. 8,000 years old 14,000 years old 30,000 years old 40,000 years old
Answer:
The age of the mastodon tooth is about 40000 years.
Explanation:
The presence of carbon-14 decreases exponentially in time. Let consider half-life of Carbon 14 in 5000 years. If the mastodon tooth went through 8 half lives, then we estimate its age in 40000 years.
The age of the mastodon tooth is about 40000 years.
The finches that darwin studied differed in the shape of their beaks. according to darwin, which of these best describes these finches?
Answer:
C
Explanation:
A. no... the finches were living in different environments making them become less similar over time.
B. no... the Galapagos are long way from Africa... not possible
C. yes... This is true ... the size and shape of the beaks makes a big difference in the type of food the finches could eat. Seed types would change as climate change and finches would with the best beak size for the food available would survive.
D. no very unlikely. DNA Evidence show that the finches were from one common ancestor
The finches that Darwin studied differed in the shape of their beaks. According to darwin it become adapted to eating different foods.
Support your answer?The size and shape of the beaks make a big difference in the type of food the finches could eat.
Seed types would change with climate change and finches would with the best beak size for the food available to survive.
Thus, option "C" is correct whereas another option is very unlikely DNA Evidence shows that the finches were from one common ancestor.
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Describe the structure and function of chitin.
Answer: Chitin is one of the most important biopolymers in nature. It is mainly produced by fungi, arthropods and nematodes. In insects, it functions as scaffold material, supporting the cuticles of the epidermis and trachea as well as the peritrophic matrices lining the gut epithelium.
other peerson is correct
True or False: Competition occurs between plants that use the
same resources.
Answer:
True
Explanation:
AQUATICS SCIENCE please help me
Answer:
No light conditions I think.
Explanation:
Answer:
nutrient rich conditions
PLEASE HELP I WILL GIVE BRAINALIST
Answer:
I think your answer is B).
Answer:
B An docrcase in water temperature
Organisms, like humans, look different because we share all the same variations of traits, but have different traits.
true
false
Answer:
true
Explanation:
It's like zebras can never have the same stripes. Nothing can be created exactly the same.
What are some of the differences between a forensic autopsy technician and a forensic pathologist assistant?
Answer:
The differences between a forensic autopsy technician and a forensic pathologist assistant are as follows:
Forensic autopsy technician generally work in morgues and hospital while forensic pathologist assistant work in research laboratories and hospital laboratories.Forensic autopsy technician are responsible to prepare the dead body for autopsy while Pathology assistants do research on the tissues of body.Autopsy technician handle morgue examination area, while pathology assistants handles laboratory examination area.What was the Scientific Revolution of the mid-1500s and 1600s? What is the scientific method? List the major steps of the scientific method. What are the lasting consequences of the scientific revolution?
Answer:
Question: What was the Scientific Revolution of the mid-1500s and 1600s?
Answer: Before the mid-1500s and 1600s, Scientists feed on ancient scholars scientific materials and what the church explains through the Bible of how God created the universe and the people that lived in the world. The interest people have to observe their natural environments, coupled with the rise of more educated scientists led to the Scientific Revolution which uses observation of the natural world, experimentation, and a well-followed scientific method to discover the world.
Question: What is the scientific method?
Answer: During the mid-1500s and 1600s scientists developed a method called the scientific method with the aim to lay emphasis on observing the natural world and experimentation to test hypothesis. Making them start thinking like scientists instead of accepting unproven theories.
Question: List the major steps of the scientific method.
Answer:
1. Observation
2. Experimentation
3. Logical Ideas
4. Hypothesis
Question: What are the lasting consequences of the scientific revolution?
Answer:
1. It shaped the way people think and make people question and observe their environments.
2. It embraces the acceptance of proven and tested theories rather than some mystical beliefs.
Imagine you accidently step on a sharp object with
your bare foot.
Explain how the parts of the peripheral nervous
system work with the central nervous system to
produce a response to the stimulus
Answer: receptors in the skin stimulate sensory neurons
Sensory neurons send messages to the central nervous system
Interneurons send messages to the motor neurons in response to messages received from sensory neurons
Motor neurons cause muscles in the leg to contract and pull the foot away
Explanation:
To produce a response to the stimulus, receptors (sense organs, muscles, glands, etc.) receive stimuli from the environment and from inside your body.
How peripheral nervous system works with the CNS?To produce a response to the stimulus the central nervous system processes information, it is the information that is received from the peripheral nervous system.
After that, the central nervous system sends this processed information to the peripheral nervous system. The peripheral nervous system sends a signal to the body part that needs to respond so you can react appropriately to the stimulus.
Therefore, if you accidentally step on a sharp object with your bare foot the peripheral nervous system work with the central nervous system to produce a response to the stimulus through receptors.
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Pl help it’s for a grade
Answer:
C. It acts only on objects that are at rest If an object is at rest then it is in static equilibrium which means the sum of the forces =0. Friction is applied to moving rigid bodiesI do exams and quizzes if your interested!!!1. How many pounds of biological material is below that soil surface?
Answer:
The amount of organic matter in mineral (sand, loam or clay) soils ranges from very low being 1% by weight, to average being 2 to 4%, and high being greater than 5%. There are also “muck” or organic or peat based soils that are 30 to 40% organic matter. The general consensus is the more soil organic matter the better. approximately 45%
Soil Composition
The basic components of soil are minerals, organic matter, water and air. The typical soil consists of approximately 45% mineral, 5% organic matter, 20-30% water, and 20-30% air. These percentages are only generalizations at best.
Explanation:
Answer quick pls
Why is it important for cells in your body to go through the cell cycle?
Answer:
It is important because if your cells do not reproduce you would eventually run out of cells and die.
Explanation:
Answer:
The cell cycle is the replication and reproduction of cells, whether in eukaryotes or prokaryotes. It is important to organisms in different ways, but overall it allows them to survive
Explanation: