An isolated population of prairie dogs has longer than average teeth. As a result, they can eat more grass with less effort and are better able to survive. The mutation(s) that resulted in longer teeth: happened by chance O allowed the teeth to grow longer over several generations until they reached an optimal length for eating grass O arose in many members of the population at the same time. Owould only occur in a prairie dog population that eats grass and would not occur in a population that lives on seeds O occurred because the prairie dogs needed to be more efficient at eating grass to survive and reproduce
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- African elephants are threatened by poachers, who kill the elephants for their tusks. Both male and female elephants can grow tusks. There are some elephants that are tuskless (do not grow tusks). In the elephant population of Gorongosa National Park, the number of female elephants was monitored for many years. The graphs show the total female elephant population and the percent of tuskless females in that population from 1970 to 2015. Which of the following describes the trend in the female elephant population from 1970 to 1995 ? The overall population decreased, and the proportion without tusks increased. Answer A: The overall population decreased, and the proportion without tusks increased. A The overall population decreased, and the proportion without tusks decreased. Answer B: The overall population decreased, and the proportion without tusks decreased. B The overall population increased and then decreased, and the proportion without tusks…A small number of lizards are introduced to an island. Their native habitat is a forest and they mostly live in trees. The island has few trees and the lizards spend most of their time on the ground where they are eaten by snakes. Over many generations the island population of lizards develop shorter toes and longer legs which allow them to run faster on bare ground. The lizards withe longest legs/shortest toes are the least likely to be caught be snakes. After several decades lizards are collected from the island and placed in enclosures. Lizards from the original forest habitat are placed in identical enclosures. Each type of lizard mates and has offspring. The offspring resemble their parents and the offspring of island lizards have shorter toes/longer legs than offspring of forest lizards (i.e the differences you see in nature are also found in a lab setting). This is an example of Group of answer choices a. both natural selection and evolution b. evolution only c.…A study on a poultry farm was conducted to determine the percentage of vitamin supplement СМАС necessary to add to the feed of turkeys in order to maximize their growth. According to this data, what percentage of vitamin supplement should be added to the turkeys' diet? Turkey Growth Data 20 10 6 8 4 10 12 14 16 18 20 22 24 Percent of Vitamin Supplement a. 6% Write three observations Write one inference answer Average Weight Gain
- The medium ground finch (Geospiza fortis), a seed-eating bird that inhabits the Galápagos Islands. In 1977, the G. fortis population on the island of Daphne Major was decimated by a long period of drought: Of some 1,200 birds, only 180 survived. During the drought, small, soft seeds were in short supply. The finches mostly fed on large, hard seeds that were more plentiful. Birds with larger, deeper beaks were better able to crack and eat these larger seeds, and they survived at a higher rate than did finches with smaller beaks. Since beak depth is an inherited trait in these birds, the offspring of surviving birds also tended to have deep beaks. As a result, the average beak depth in the next generation of G. fortis was greater than it had been in the pre-drought population. This is an example of which evolutionary mechanism? Lütfen birini seçin: O a. gene flow O b. natural selection O c. random mating O d. mutation O e. genetic driftratio of birth of horse is 50:50 please answer all the parts as they are connected a) what you can know from the graph? why these curve of male and female is different. please propose some kind of testable hypothesis related to horse life. b) in case population growth is exponential and its dangerous for the surrounding. management team is called in the zoo from the graph which horse should be pick for maximum effect in lowering the growth?In 1929, 13 white-tailed deer were introduced to an isolated island with no natural predators. A survey was conducted once a year to estimate the population of deer on the island. The table shows the deer population over the first five years on the island. The deer fed on many of the native plants found on the island, including the California false indigo, a thornless shrub that is a preferred food source on the island for deer. Based on the data, which of the following graphs correctly predicts the population of California false indigo from 1929 to 1941? Year of Survey Population of Deer 1929 13 1932 29 1935 66 1938 157 1941 398 image 1 because the California false indigo will be able to reproduce faster than it can be consumed by the deer and will be unaffected by the deer population, maintaining its current population image 2 because the increasing number of deer will help spread seeds of the plant and lead to a rise in…
- Aphids and ants can have a mutualistic relationship. Aphids exude sugary substances that provide energy for ants and ants can defend aphid colonies from predators. This experiment measured the population growth rate of aphids vs the number of aphids at the start of the experiment on plants where ants were present or absent. Please select all the statements that are reasonable interpretations of this graph. Select all that apply. A. When starting populations are low, the presence of ants does not matter. Their importance increases with higher starting population densities. B. It appears that aphid populations founded with 12 individuals grow faster than aphid populations founded with 24 individuals when compared to each other in the same ant treatment.. C. none of the above. D. The growth of rate of aphid populations was significantly higher when tended by ants than aphid population that were not tended E. Ants seem to be necessary for small founding populations of…Think about everything you need to survive. Choose one factor and construct an explanation about why it might be a limiting factor for the human population. Explain the importance of this natural resource for the human population.In Kenya, the Sheldrick Elephant orphanage takes care of elephants that have lost their herd as a result of poaching. In 2012, the orphanage had a population size of 387 elephants. Over the next two years, they had 18 pregnant cows birth successfully. Three cows were lost due to complications with their pregancies. They lost 14 more from sickness. They found 57 elephants that required care and were able to release 12 into the wild. All of the elephants are kept in a 225 m 175 m rectangular park. Calculate the population growth, growth rate, per capita growth rate and population density at beginning of the year and end of the year. Express your answers using two significant digits and show all your work in details.
- In Kenya, the Sheldrick Elephant orphanage takes care of elephants that have lost their herd as a result of poaching. In 2012, the orphanage had a population size of 387 elephants. Over the next two years, they had 18 pregnant cows birth successfully. Three cows were lost due to complications with their pregancies. They lost 14 more from sickness. They found 57 elephants that required care and were able to release 12 into the wild. All of the elephants are kept in a 225 m 175 m rectangular park. Calculate population growth, growth rate, per capita growth rate, and population density at the beginning of the year and population density atm the end of 2 years Keep all decimals during calculations and express your answers using two significant digits.In Kenya, the Sheldrick Elephant orphanage takes care of elephants that have lost their herd as a result of poaching. In 2012, the orphanage had a population size of 387 elephants. Over the next two years, they had 18 pregnant cows birth successfully. Three cows were lost due to complications with their pregancies. They lost 14 more from sickness. They found 57 elephants that required care and were able to release 12 into the wild. All of the elephants are kept in a 225 m 175 m rectangular park. Calculate the population growth, growth rate, per capita growth rate and population density at beginning of the year and end of the year. Express your answers using two significant digits.Walruses that live on islands near Alaska have a thick fat layer under their skin; however, their ancestors did not have a fat layer as thick as it is now. In your own words and based on course material only, describe in as much detail as possible, the process that would have resulted in this population evolving a thicker fat layer over time