Answer: the carboxyl group (COOH) of one amino acid reacts with the amino group (NH2) of another amino acid.
Explanation:
This reaction results in the formation of a covalent bond between the two amino acids, with the release of a water molecule (H2O) in a process called a condensation reaction or dehydration synthesis. The resulting bond between the amino acids is called a peptide bond, and the resulting molecule is a dipeptide. As more amino acids join through peptide bonds, a polypeptide chain is formed, which can eventually fold and function as a protein.
The muana loa site in hawaii has been monitoring which greenhouse gas since the 1950s?
question 15 options:
carbon dioxide←
methane
water vapor
nitrous oxide
The Mauna Loa site in Hawaii has been monitoring carbon dioxide levels in the atmosphere since the 1950s.
This monitoring program was initiated by Charles Keeling in 1958, and it has become one of the most important long-term environmental monitoring efforts in history. Carbon dioxide is a greenhouse gas, which means that it traps heat in the Earth's atmosphere and contributes to global warming.
The Mauna Loa monitoring program has shown that the concentration of carbon dioxide in the atmosphere has been steadily increasing over time, and it is now higher than it has been for millions of years. This increase is primarily due to human activities such as burning fossil fuels and deforestation. The Mauna Loa monitoring program has been instrumental in raising awareness about the impact of carbon dioxide on the environment and in informing global policies aimed at reducing greenhouse gas emissions.
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A shade-loving plant thrives underneath the trees in a forest. when the seeds of the plant are blown into areas where the plant receives direct sunlight, the seed sprouts but the young plant soon dies. if a series of mutations occurred in the plant that caused the plant to need more sunlight, when might the mutated plants survive?
The mutated plants might survive if the mutations result in adaptations that allow the plant to better tolerate or utilize direct sunlight.
Shade-loving plants have adapted to thrive in low light conditions by developing traits such as large leaves with a low surface area to volume ratio to maximize light absorption and photosynthesis in low light conditions. These adaptations are not beneficial in direct sunlight as they may cause the plant to overheat or lose too much water through transpiration.
If the series of mutations in the plant lead to adaptations such as smaller leaves with a higher surface area to volume ratio, increased production of protective pigments or the ability to utilize different wavelengths of light, the mutated plant may be better suited to survive and thrive in direct sunlight.
However, it is important to note that the process of natural selection is slow and not all mutations lead to beneficial adaptations. Additionally, the plant's survival in direct sunlight may also depend on other factors such as soil composition and water availability.
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Darwin discovered that variations in genes better adapt some individuals to their environment. How does this relate to natural selection?
A. They are more likely to survive, but would have more competition having those characteristics.
B. They are more likely to survive, but less likely to pass along those genes to offspring.
C. They are more likely to survive and reproduce, passing along those helpful characteristics.
D. They are more likely to survive, and change during their lifetimes by selectively using or not using various parts of their bodies.
Answer:
C. They are more likely to survive and reproduce, passing along those helpful characteristics
Explanation:
Darwin discovered that variations in genes better adapt some individuals to their environment. This relates to natural selection in that individuals with helpful characteristics are more likely to survive and reproduce, passing along those characteristics to their offspring. This process is known as natural selection, where the environment selects individuals with advantageous traits, allowing them to survive and reproduce at higher rates than individuals without those traits. Over time, this can lead to the evolution of new species as the frequency of advantageous traits increases in a population.
Why does a heart chamber (lumen) get smaller and force the blood out through a valve when cardiac muscle is stimulated to shorten
When cardiac muscle is stimulated to shorten, the heart chamber (lumen) gets smaller and forces the blood out through a valve due to the contraction of the cardiac muscle fibers.
The contraction of the cardiac muscle fibers is caused by the release of calcium ions into the muscle cells. This causes the muscle fibers to slide past each other, which shortens the muscle and reduces the size of the heart chamber.
As the heart chamber gets smaller, the pressure inside the chamber increases, which forces the blood out through a valve and into the blood vessels. The valve prevents the blood from flowing back into the heart chamber, ensuring that the blood flows in the correct direction through the circulatory system.
This process is known as systole, which is the phase of the cardiac cycle during which the heart muscle contracts and pumps blood out of the heart.
Develop a cej (claim, evidence, justification) from the following question: field mice have an either tan, black or white back and are prey to hawks. if the mouse lives in a hay field (mainly tan), which mouse will have the best chance of living and passing on its genes based on our experiment today?
Claim: The mice with tan backs will have the best chance of living and passing on their genes in a hay field.
Evidence: The experiment conducted today showed that mice with tan backs were more camouflaged and had a higher chance of avoiding predators than mice with black or white backs. The tan mice were able to blend in with the hay and avoid being seen by predators such as hawks.
Justification: Since the experiment showed that mice with tan backs had a higher chance of avoiding predators, it can be concluded that they will have a better chance of surviving and passing on their genes in a hay field. This is because they are more adapted to their environment and have a better chance of avoiding predators, allowing them to reproduce and pass on their advantageous traits to their offspring.
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You are a farmer who raises swine. A case of swine flu has been reported nearby. What steps can you take to ensure your swine are less likely to contract the swine flu? What physical signs would you monitor in your swine to determine if a case might be occurring in your livestock? What would you do to protect your human workers from potential exposure?
4-5 sentences pls
Answer: sure
Explanation:
Swine flu can spread rapidly among pig populations, and it can also pose a risk to humans. Therefore, it is important for swine farmers to take appropriate measures to minimize the risk of swine flu outbreaks. These measures may include biosecurity practices, such as limiting contact with the swine and isolating new animals, as well as monitoring for symptoms of illness in the swine. If a case of swine flu is suspected, farmers should isolate the affected animals and seek veterinary assistance. To protect human workers from potential exposure, appropriate personal protective equipment should be provided, along with training on proper biosecurity practices and adequate sanitation facilities. By implementing these measures, farmers can help prevent swine flu outbreaks, protect the health of both animals and humans, and contribute to the overall well-being of their livestock.
Exponential growth curve
Time
Logistic growth curve
Population
Carrying capacity
1. A.
2. B.
3. C.
4. D.
5. E.
Exponential growth curve: A
Logistic growth curve: C
Population: D
Carrying capacity: E
Time: B
Exponential growth curve is a mathematical representation of the growth of a population that is experiencing unlimited resources and unrestricted growth. It is characterized by a continuously increasing growth rate, resulting in a J-shaped curve when plotted over time.
In an exponential growth curve, the population increases at an accelerating rate, with the number of individuals added per unit time proportional to the current population size. The curve can be described by an exponential function of the form Nt = N0 * e^(rt), where Nt is the population size at time t, N0 is the initial population size, r is the growth rate, and e is the base of the natural logarithm.
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8. How do carrier proteins facilitate active transport?
A.Carrier proteins create an isotonic solution.
B. Carrier proteins block the plasma membrane.
C. Carrier proteins move substances from a low to high concentration.
D. Carrier proteins move substances from a high to low concentration.
Answer:
Option (C)
Explanation:
They need membrane transport proteins, like carriers, to facilitate their transport. If a carrier protein is utilized in the process, the molecule “ takes a seat” on the carrier protein from one side of the membrane, and then carried to the other side to be released.
C. Carrier proteins facilitate active transport by moving substances from a low to high concentration.
This process requires energy in the form of ATP and is used to move molecules or ions against their concentration gradient, which is the direction they would naturally move due to diffusion. The carrier protein undergoes a conformational change to bind with the molecule or ion being transported and then releases it on the other side of the membrane. This process allows cells to maintain concentration gradients and regulate the movement of substances into and out of the cell.
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The table shows information about two cities.
What can you infer about the temperature of these two cities?
Miami, Florida, would have colder temperatures because it has a lower elevation.
Miami, Florida, would have warmer temperatures because it is nearer to the equator.
Providence, Rhode Island, would have warmer temperatures because it has a higher elevation.
Providence, Rhode Island, would have warmer temperatures because it is farther from the equator.
Using the information provided in the table: Providence, Rhode Island, would have warmer temperatures because it is farther from the equator despite having a higher elevation than Miami, Florida. Locations nearer to the equator receive more direct sunlight and hence have higher temperatures.
The temperature of a location is affected by various factors such as latitude, altitude, ocean currents, and prevailing winds.
The table shows that Providence, Rhode Island, is located at a higher latitude than Miami, Florida. Locations closer to the equator generally receive more direct sunlight and have higher temperatures.
Therefore, Miami, Florida, would have colder temperatures because it is nearer to the equator.
However, the table also shows that Providence, Rhode Island, has a higher elevation than Miami, Florida. Locations at higher altitudes generally have lower temperatures due to the decrease in atmospheric pressure and the resulting drop in temperature.
However, the effect of altitude on temperature is not as significant as latitude. Therefore, Providence, Rhode Island, would have warmer temperatures because it is farther from the equator, despite having a higher elevation than Miami, Florida.
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Light-dependent reactions convert light energy to chemical energy in which form?
Light-dependent reactions convert light energy to chemical energy in the form of ATP and NADPH.
Photosynthesis consists of two sets of reactions: the light-dependent reactions and the light-independent reactions.
Light-dependent reactions occur in the thylakoid membrane of chloroplasts and require light energy to produce ATP and NADPH, which are used to power the light-independent reactions.
During light-dependent reactions, photons of light are absorbed by pigments such as chlorophyll and carotenoids, which excite electrons and trigger a series of redox reactions that generate ATP and NADPH.
Water is also split in this process, releasing oxygen as a byproduct. The energy stored in ATP and NADPH is used in the light-independent reactions to synthesize organic molecules such as glucose.
In summary, light-dependent reactions convert light energy to chemical energy in the form of ATP and NADPH, which are then used to power the light-independent reactions of photosynthesis.
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Gut bacteria are microorganisms that live in our digestive tract and have a mutualistic relationship with humans. These bacteria obtain nutrients from the digestive system and produce vitamin K for humans. Vitamin K is necessary for blood clotting to heal wounds in humans. Without these gut bacteria would be disrupted in a human?
Without gut bacteria, humans would be in a state of disarray. Gut bacteria is essential for digestion, immunity and health of the human body.
They help break down food in the digestive tract, synthesize vitamins, produce enzymes and protect the body from potential pathogens. They also create an environment that allows beneficial bacteria to colonize the digestive tract and help protect the body from environmental toxins.
Without gut bacteria, humans would be more susceptible to infection, experience digestive issues such as constipation, and would be unable to absorb nutrients properly. Additionally, gut bacteria is necessary for the production of vitamin K, which is essential for blood clotting and wound healing.
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What is your personal definition of leadership?
Answer:
In simple words, leadership is about taking risks and challenging the status quo.
Explanation:
The Earth's core has an estimated temperature between
6,000°C and 7,000°C.
1,000°C and 2,000°C.
500°C and 1,000°C.
8,000°C and 9,000°C.
Would water be produced or used up when proteins break apart into amino acids? Explain your answer by describing the reaction
When proteins break apart into amino acids, water is produced. This reaction is called hydrolysis. It involves the breaking of a bond between two molecules using water molecules.
In the case of proteins, water molecules break the peptide bonds that hold the amino acids together, forming two separate molecules. During this reaction, one molecule of water is used to break the bond, while two molecules of water are released.
This is why water is produced when proteins break apart into amino acids. The water produced helps to keep the reaction going, allowing the protein to be broken down into its individual amino acids.
The amino acids can then be used to create new proteins or be used in other metabolic processes. Hydrolysis is an important process in the body and is responsible for the breakdown of many large molecules, including proteins. Without this reaction, proteins would not be able to be broken down, and many metabolic processes would not be able to occur.
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When do humans store fat molecules in their bodies?
Humans store fat molecules in their bodies when they consume more calories than they expend.
This can occur when they consume high-calorie foods or drinks in excess or engage in a sedentary lifestyle. When energy intake exceeds energy expenditure, the excess calories are stored as triglycerides, which are the main constituent of body fat, in adipose tissue.
This stored energy can be utilized later by the body when there is a shortage of energy from food intake.
However, if the excess caloric intake is not balanced with adequate physical activity to expend energy, the accumulation of body fat can lead to obesity and related health problems such as type 2 diabetes, heart disease, and certain types of cancer.
Therefore, it is important for individuals to maintain a healthy diet and engage in regular physical activity to prevent excessive fat accumulation and maintain a healthy body weight.
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The graph shows the rate of blood flow through different organs at rest and during exercise
Based on your question, it appears that you are referring to a graph that compares the rate of blood flow through different organs at rest and during exercise.
Blood flow increases during exercise to provide oxygen and nutrients to the working muscles and to remove waste products. At rest, organs like the brain and kidneys receive a higher percentage of blood flow, while during exercise, a greater portion is redirected to the skeletal muscles to meet their increased demands.
The specific distribution of blood flow during exercise depends on factors such as exercise intensity, duration, and individual fitness levels.
As exercise intensity increases, the demand for oxygen and nutrients in the muscles becomes more significant, leading to a greater redistribution of blood flow to meet those demands.
Overall, the graph comparing blood flow at rest and during exercise would typically show an increase in blood flow to the skeletal muscles and a relative decrease in blood flow to non-essential organs.
This redistribution of blood flow is essential for optimizing performance and ensuring efficient oxygen and nutrient delivery to the working tissues.
It's worth noting that the regulation of blood flow during exercise is a complex process influenced by various factors, including the autonomic nervous system, local metabolic factors, and hormonal control.
These mechanisms work together to ensure that blood flow is appropriately adjusted to meet the demands of different organs and tissues during exercise.
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The graph shows the rate of blood flow through different organs at rest and during exercise. What conclusions can be drawn from the graph regarding the impact of exercise on blood flow distribution in different organs?
what would happen if the amount of freshwater entering mono lake decreased/increased using race?
Answer: If the amount of fresh water entering mono lake decreased, the concentration of salinity increases and finally the lake would dry out. The opposite is true if more fresh waster entered the lake.
Explanation: The water in the lake is snowmelt and rainwater runoff from the mountains. It enters the lake through streams. Water can only remove by evaporation. When the water evaporates, the salts left behind.
So we can conclude that if the amount of fresh water entering mono lake decreased, the concentration of salinity increases and in the last the lake dry out.
The three-dimensional structures of trnas are highly conserved for what reason?.
The three-dimensional structures of tRNAs, or transfer RNAs, are highly conserved because they are crucial for their function in protein synthesis.
tRNAs are responsible for carrying specific amino acids to the ribosome during translation, and their structure plays a key role in ensuring accurate delivery of the correct amino acid to the growing polypeptide chain.
tRNAs consist of a cloverleaf-shaped structure with a stem and loop region. The stem region is formed by base pairing between complementary nucleotides, and the loops contain specific sequences that are recognized by enzymes involved in tRNA charging and translation. These structural features are essential for the interactions between tRNAs, amino acids, and the ribosome.
Mutations in the nucleotide sequence that affect the three-dimensional structure of tRNAs can lead to errors in translation and potentially cause genetic disorders. Therefore, natural selection favors the conservation of tRNA structure to maintain its functional integrity.
Furthermore, tRNAs are highly conserved across different organisms, including bacteria, archaea, and eukaryotes. This conservation suggests that tRNAs were present in the last universal common ancestor (LUCA) and have been essential for protein synthesis throughout evolution. Overall, the high conservation of tRNA structure reflects its critical role in accurate protein synthesis and the maintenance of genetic information.
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When a plant lacks water, the vacuole shrinks causing the plant to wilt. This is a response of what internal stimuli?.
The plant's response to lack of water and subsequent wilting is an example of a response to an internal stimulus. Internal stimuli are changes that occur within an organism's body, such as changes in hormone levels or nutrient availability, that can trigger physiological responses.
In the case of plants, water is essential for maintaining cell turgor pressure, or the pressure that water molecules exert against the cell wall. When a plant lacks water, the vacuole, which is a membrane-bound organelle that stores water and other substances, shrinks. This causes the cell to lose turgor pressure and the plant to wilt.
The plant's response to water deprivation involves various physiological and biochemical mechanisms that allow the plant to conserve water and maintain cellular homeostasis. These mechanisms may include closing stomata (pores on the surface of leaves) to reduce water loss through transpiration, producing drought-resistant proteins and sugars, and activating signaling pathways that regulate gene expression and cellular metabolism.
Overall, the plant's response to lack of water and wilting is an important adaptation that allows it to survive in environments where water is limited, highlighting the complex and dynamic nature of plant physiology.
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ovulation begins when a mature egg(ovum) is released from an ovary. peristaltic contractions and the action of cilia transport the ovum through the fallopian tube to the uterus. the hormones estrogen, follicle-stimulating hormone (fsh), luteinizing hormone, and progesterone regulate and control this process.
Ovulation is the process by which a mature egg or ovum is released from the ovary regulated by estrogen, follicle-stimulating hormone (FSH), luteinizing hormone (LH), and progesterone, the correct options are B, C, D, & E.
During the menstrual cycle, rising levels of estrogen stimulate the growth and maturation of ovarian follicles. When the follicle reaches maturity, LH levels surge, triggering the release of the mature egg from the ovary. Peristaltic contractions and the action of cilia in the fallopian tube transport the ovum toward the uterus, where it may be fertilized by sperm.
Following ovulation, the remnants of the follicle form the corpus luteum, which produces progesterone. Progesterone helps to prepare the uterus for pregnancy by thickening the endometrium and suppressing further ovulation. If fertilization does not occur, the corpus luteum degenerates, progesterone levels drop, and menstruation occurs, the correct options are B, C, D, & E.
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The correct question is:
Ovulation begins when a mature egg(ovum) is released from an ovary.
A) peristaltic contractions and the action of cilia transport the ovum through the fallopian tube to the uterus
B) the hormones estrogen
C) follicle-stimulating hormone (FSH)
D) luteinizing hormone
E) progesterone regulate and control this process.
Question 3(Multiple Choice Worth 3 points)
(06. 03 LC)
What are some of the immune functions of the lymphatic system?
O Cleaning red blood cells from the blood and creating lymph fluids
Transporting lymph to the tissues and creating lymph fluids
O Removing infectious agents and making white blood cells
O Making red blood cells and removing infectious agents
Question 4 Multiple Choice Worth 3 points)
(06. 03 MC)
Answer:
O) Removing infectious agents and making white blood cells are some of the immune functions of the lymphatic system.
Your friend has blood type B+. Explain what their genotype would be including Rh alleles.
A person's genotype would either be BB+ or BO+ if they had blood type B+. The O allele does not create any antigens, whereas the B allele controls whether the B antigen is present on the surface of red blood cells. The presence of the Rh factor, a distinct antigen located on the surface of red blood cells, is indicated by the "+". An individual with blood type B+ would therefore have at least one B allele, one Rh allele, and perhaps another B allele or an O allele.
the following base sequence occurs in bacteria gcg gaa gga gta atg tat aat cgc ctt cct cat tac ata tta when treated with a mutagen the sequence changes to gcg gaa gga ggt aat gta taa t cgc ctt cct gga tta cat att a what type of mutation is caused by the compound? select one: a. g:c to a:t transistion b. 2 frameshift c. 1 frameshift d. -1 frameshift
The type of mutation is caused by the compound is (c). 1 frameshift is correct option. because on the comparison of the original sequence "gcg gaa gga gta atg tat aat cgc ctt cct cat tac ata tta" with the mutated sequence "gcg gaa gga ggt aat gta taa t cgc ctt cct gga tta cat att a".
We can observe that there is an insertion of the nucleotides "aat" after the seventh nucleotide "ggt" in the mutated sequence.
This insertion of nucleotides results in a shift in the reading frame of the sequence from that point onward, which alters the codons downstream of the insertion. Thus, the type of mutation caused by the mutagen is a frameshift mutation.
Furthermore, since there is an insertion of nucleotides, and the number of nucleotides inserted is not a multiple of three, this is a 1 frameshift mutation, where a single nucleotide is inserted or deleted, shifting the reading frame by one base.
Therefore, the correct answer is option c) 1 frameshift.
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Some hatchetfish can produce bright bioluminescence on their undersides, while others can only produce weak light.
If a population of hatchetfish lives in water that gets cloudy due to volcanic eruption, which prediction is accurate?
A
Both fish groups will survive and reproduce better.
B
The weak-light hatchetfish will survive better than the bright-light hatchetfish.
C
The bright-light hatchetfish will survive better than the weak-light hatchetfish.
D
There will be no difference in survival between the two groups of fish
The prediction that is most accurate when considering a population of hatchetfish living in water that gets cloudy due to volcanic eruption is that both fish groups will survive and reproduce better.
Here, correct option is A.
Although the bright-light hatchetfish may possess a better capacity to survive in the absence of light due to their bioluminescent ability, the weak-light hatchetfish can still survive in the murky waters. The decrease in light levels due to the cloudiness or murky waters will provide both fish groups with a more suitable environment to live in.
They will be able to find food easier as prey will be less likely to be startled by the light. Furthermore, the risk of predation will be reduced due to the reduced visibility of the predators. Thus, both groups of hatchetfish have an equal chance at survival in the murky waters, and their reproductive success is likely to increase due to the improved conditions.
Therefore, correct option is A.
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Epigenetic changes may be__ but they aren’t necessarily___
Epigenetic changes may be heritable, but they aren't necessarily permanent.
Epigenetic changes can be passed down from one generation to the next, but they can also be modified by environmental factors and are not necessarily permanent.
Hope that helps! Good luck! :)
Which part of the brain is unique in some mammals in comparison to other vertebrates?.
The cerebral cortex is a part of the brain that is unique in some mammals compared to other vertebrates.
The cerebral cortex is the outer layer of the brain and is responsible for many important functions, including consciousness, perception, and voluntary movement. In mammals, the cerebral cortex is highly developed and organized into distinct regions, allowing for complex cognitive abilities and behaviors.
The development of the cerebral cortex is thought to have played a crucial role in the evolution of mammals and their ability to adapt to a wide range of environments. While other vertebrates have a cerebral cortex-like structure, it is less complex and organized than in mammals.
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What are the possible blood types for children of a man that has blood type AB and a female that has blood type O? Give probabilities for each.
Type A
Type B
Type AB
Type O
Answer:
Type 0
Explanation:
type 0 can give blood to any blood group
Explain why it is unusual for Calix to be a male calico cat.
Explain how we know Calix has extra DNA
be sure to talk about the experiments and
use the new vocab you learned (point mutation, chromosomal rearrangement, nondisjunction)
How does the calico pattern affect Calix (his health) ?
It is unusual for Calix to be a male calico cat because the majority of calicos are female. Calicos are characterized by their distinctive fur color pattern, which is composed of black, white, and orange patches.
This specific pattern is caused by a combination of a point mutation and a chromosomal rearrangement. The point mutation causes the fur to be black or orange, and the chromosomal rearrangement causes the patches of these colors to be in different places.
The chromosomal rearrangement is caused by a process known as nondisjunction, which is when two chromosomes fail to separate during the formation of gametes, resulting in an extra set of chromosomes. This extra set of chromosomes is what causes Calix to be male.
The extra DNA in Calix does not affect his health in any way. The calico pattern does not cause any health issues as it is a purely aesthetic trait. He is still a healthy cat and has a normal lifespan. The calico pattern is just a unique trait that sets him apart from other cats.
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If the mouse population disappeared
from the ecosystem, the fox would
most likely-
A hunt owls and birds
Beat grasses and grains
C disappear from the food web
D eat more rabbits and squirrels
Answer: D. Eat more rabbits and squirrels
Explanation: If the mouse population disappeared from the ecosystem, the fox would most likely eat more rabbits and squirrels.
The diagram below shows the steps of DNA replication.
Which of the following is the correct sequence of replication?
2, 1, 4, 3
3,4, 1, 2
3, 4, 2, 1
3, 1,4, 2
Answer:
B
Explanation: