Homework Answers
A keystone species is a species that has a greater impact on its community than its population size would predict.
As keystone species are considered to be the most important factor for a balanced ecosystem hierarchy. Without them, the ecosystem will cease to grow or survive. Some keystone species are apex predators such as wolves or members of the big cat family.
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A keystone species is a species that has a size would predict. impact...
B. Keystone species are species that have a very large impact on community structure and the...
B. Keystone species are species that have a very large impact on community structure and the food web if removed from the system. For example, the presence or absence of large herbivores can have an impact on snake abundance in African grasslands. McCauley & Young performed experiments in Kenya (1997-2006) where fences were constructed around plots to exclude elephants and zebras. After 8 years, snakes were counted; the results are shown in the accompanying graph. Please offer an explanation of...
Please answer all the 7 questions for me. Thank you so much for your help. 1. What are a biological species? What is speciation? Discuss the relationship between species and speciation. 2. Define a bi...
Please answer all the 7 questions for me. Thank you so much for your help. 1. What are a biological species? What is speciation? Discuss the relationship between species and speciation. 2. Define a biological population. Why are populations described as dynamic? Provide three examples of properties of a population that can change over time. 3. Which is the most accurate way to determine population size? Describe two different methods for estimating population size. Discuss the advantages and disadvantages of...
1) In ecology, "productivity" essentially means a) the amount of energy in an ecosystem. b) the...
1) In ecology, "productivity" essentially means a) the amount of energy in an ecosystem. b) the amount of work that is accomplished. c) the amount of biomass of organisms generated over time. 2) Of the five patterns showing how species richness varies with productivity, the ________ pattern is least common. a) positive b) u-shaped c) hump-shaped d) negative e) neutral 3) When there is a hump-shaped relationship between productivity and species richness, it is because a) only a few competitively...
Please answer all the 7 questions for me. Thank you so much for your help. 1....
Please answer all the 7 questions for me. Thank you so much for your help. 1. What are a biological species? What is speciation? Discuss the relationship between species and speciation. 2. Define a biological population. Why are populations described as dynamic? Provide three examples of properties of a population that can change over time. 3. Which is the most accurate way to determine population size? Describe two different methods for estimating population size. Discuss the advantages and disadvantages of...
Write a program to help answer questions like the following: Suppose the species Klingon ox has...
Write a program to help answer questions like the following: Suppose the species Klingon ox has a population of 100 and a growth rate of 15 percent, and the species elephant has a population of 10 and a growth rate of 35 percent. How many years will it take for the elephant population to exceed the Klingon ox population? You can assume that this will happen within 10 years. Use the version of the class Species from Sakai’s Week 7...
= Endangered species sometimes breed in captivity. Why are such species endangered in the wild? A....
= Endangered species sometimes breed in captivity. Why are such species endangered in the wild? A. Their population density is too high B. Loss of habitat C. Their environment is polluted What is the difference between Density-Dependent and Density-Independent Factors on populations? A. density-dependent factors exert a greater influence when there are more individuals; density-Independent exerts the same influence on all individuals regardless of their number OB. density-dependent factors exert a greater influence on larger, more dense Individuals, density-Independent factors...
1) If a species has a (Lambda sign) of 0.75 and has a current population size...
1) If a species has a (Lambda sign) of 0.75 and has a current population size of 135, how many years will it take for the population size to go below 50? Show all work
. Bird species may decrease egg size and increase clutch size, increase egg size and decrease...
. Bird species may decrease egg size and increase clutch size, increase egg size and decrease clutch size, or decrease egg and clutch size. Describe the advantages and disadvantages of each strategy. Is one strategy better than any other? Why or why not? B) State Lack’s Hypothesis and describe why it is short-sighted
Can someone correctly select the answers Suppose scientists studied a species of plant that grows in...
Can someone correctly select the answers
Suppose scientists studied a species of plant that grows in shady environments. They measured the size of leaves in two plant populations and found that the size distribution was similar. In addition, they found that plants with larger leaves tended to produce more seeds and that their offspring tended to have large leaves. The scientists also measured the selection differential, S, of leaf size in each population. In population A, S equalled 1 cm²....
1-There is a population of individuals which are geographically isolated from other populations of their species....
1-There is a population of individuals which are
geographically isolated from other populations of their species.
Their population mates randomly, has no net mutations in their
genome, and is not subjected to natural selection pressures.
However, their population is small, only 200 individuals. The gene
for fur color in this population has two alleles in a
dominant-recessive relationship, A and a. If allele A is currently
at a frequency of 0.8 and allele a is at 0.2:
i. What do...
B. Keystone species are species that have a very large impact on community structure and the food web if removed from the system. For example, the presence or absence of large herbivores can have an impact on snake abundance in African grasslands. McCauley & Young performed experiments in Kenya (1997-2006) where fences were constructed around plots to exclude elephants and zebras. After 8 years, snakes were counted; the results are shown in the accompanying graph. Please offer an explanation of...
= Endangered species sometimes breed in captivity. Why are such species endangered in the wild? A. Their population density is too high B. Loss of habitat C. Their environment is polluted What is the difference between Density-Dependent and Density-Independent Factors on populations? A. density-dependent factors exert a greater influence when there are more individuals; density-Independent exerts the same influence on all individuals regardless of their number OB. density-dependent factors exert a greater influence on larger, more dense Individuals, density-Independent factors...
Can someone correctly select the answers
Suppose scientists studied a species of plant that grows in shady environments. They measured the size of leaves in two plant populations and found that the size distribution was similar. In addition, they found that plants with larger leaves tended to produce more seeds and that their offspring tended to have large leaves. The scientists also measured the selection differential, S, of leaf size in each population. In population A, S equalled 1 cm²....
1-There is a population of individuals which are
geographically isolated from other populations of their species.
Their population mates randomly, has no net mutations in their
genome, and is not subjected to natural selection pressures.
However, their population is small, only 200 individuals. The gene
for fur color in this population has two alleles in a
dominant-recessive relationship, A and a. If allele A is currently
at a frequency of 0.8 and allele a is at 0.2:
i. What do...
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