Read the article “Daring to live on the edge” then answer the following questions Question 4 1 pts Which population of house species has inhabited Kenya for the longest period of time? Group of answer choices The Mombasa population The Nairobi population The population on the Kenya-Uganda border Flag question: Question 5 Question 5 1 pts Which population of house sparrows is on the leading edge of the Kenyan invasion? Group of answer choices The Mombasa population The Nairobi population The population on the Kenya-Uganda border Flag question: Question 6 Question 6 1 pts Which house sparrows release more stress hormones and have a higher ratio of stress hormone receptors in their brains, giving a greater stress response? Group of answer choices Individuals in older, established populations. Individuals on the leading edge of the invasion.
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You are an exercise physiologist studying the evolution of endurance running in Kenyans. In exploring the country, you find 30 Masai men of who are all distant cousins and approximately the same age. Half of the men moved to the highlands as children and half remained in the lowlands. Which of the following is a most likely outcome in an experiment that studies their endurance in long distance running? Question 3 options: The lowland Masai are able to elevate their hematocrit in response to weeks of exposure to high altitude. The lowland Masai have higher capacity because they grew up with more abundant oxygen in the environment. The lowland and highland Masai possess different genes encoding alpha and/or beta globin. The highland Masai evolved better endurance capacity as a result of growing up at high altitude.
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Elephants are not the most dominant species in African grasslands, yet they influence community structure. The grasslands contain scattered woody plants, but they are kept in check by the uprooting activities of the elephants. Take away the elephants, and the grasslands convert to forests or to shrublands. The newly growing forests support fewer species than the previous grasslands. Which of the following describes why elephants are the keystone species in this scenario? A) Essentially all of the other species depend on the presence of the elephants to maintain the community. B) Grazing animals depend upon the elephants to convert forests to grassland. C) Elephants prevent drought in African grasslands. D) Elephants are the biggest herbivore in this community. E) Elephants help other populations survive by keeping out many of the large African predators.
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A mosquito biting its host is an example of predation. mutualism. commensalism. parasitism. Which term best describes the succession in response to environmental disturbances that move a community back to equilibrium? primary succession secondary succession season succession climax succession Which statement would best explain why the reproduction rate in Kenya is dropping? increased use of contraception and increased illness due to HIV/AIDS. decreased use of contraception and increased illness due to HIV/AIDS. increased use of contraception and decreased illness due to HIV/AIDS. decreased use of contraception and decreased illness due to HIV/AIDS. A volcanic island that would arise from the sea would undergo primary succession because it would have had soil already. secondary succession because it would have had soil already. primary succession because it would not have had soil. secondary succession because it would not have had soil. The formula rN is a way to measure death rate. population growth. birth rate. age stratification. If the rate of increase of a population remains the same, then the size of the population will remain the same. the size of the population will steadily increase. the size of the population will decrease steadily and then plateau. the size of the population will rapidly decrease almost to 0. If a human population reaches its carrying capacity, what would you most reliably expect to observe? Highest population density Age structure is an inverted pyramid Uniform dispersion Random dispersion Type I survivorship curve which is likely true of the term populations? it consists of all of the organisms that inhabit a certain area. it consists of all of the animals that inhabit a certain area. it consists of all of the individuals of a given species that inhabit a certain area. it consists of all of the males of a given species that inhabit a certain area. The absolute population size of a particular species relative to the population size of other species within the community is called species distribution pattern. relative species abundance. succession ration. species proportion.
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