BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 40, Problem 7SA
Summary Introduction
Introduction:
Guppies are the small fishes that are native residents to shallow freshwater streams in the mountains of Trinidad. The evolutionary biologists John Endler and David Reznick studied the population of guppies to determine the actual impact or effect of predation on life history traits.
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Chapter 40 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 40 - Most commonly, individuals of a natural population...Ch. 40 - The rate at which population size grows or...Ch. 40 - Suppose 200 fish are marked and released in a...Ch. 40 - Prob. 4SACh. 40 - For a given species, the maximum rate of increase...Ch. 40 - _______ is a density-independent factor that...Ch. 40 - Prob. 7SACh. 40 - Prob. 8SACh. 40 - Compared to the less developed countries, the...Ch. 40 - An increase in infant mortality will _______ a...
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- Which describes the most likely result that the scientists found when they compared the average beak size in the years before 1977 with the average beak size in the years after 1977 ? A. Average beak size after the drought could not be measured for comparison B. Average beak size after the drought was larger than before the drought C. Average beak size after the drought was smaller than before the drought D. Average beak size after the drought was the same as before the droughtarrow_forwardIf populations of white rhinoceros (Ceratotherium simum) continue to decline, one approach to prevent extinction would be captive breeding. How does this process work? a. The remaining animals are moved into captivity to try to increase the population, after which they are reintroduced into the wild. b. The remaining animals are moved to a national park. c. The remaining animals are taken to the largest zoos so more people can see theam. d. A few individuals are moved to an outdoor enclosure to ensure that mates are available.arrow_forwardRobertMacArthur’s study of forest warblers suggested that:a.fewer warbler species can survive in more complex habitats.b.warbler species diversity increases with habitat complexity.c.warbler species diversity decreases with habitat complexity.d.most warblers have rather similar foraging niches.e.none of the choices apply.arrow_forward
- In populations subjected to high levels of predation a. individuals should invest little in reproduction so as to maximize their survival. b. individuals should produce few offspring and invest little in any of them. c. individuals should invest greatly in reproduction because their chance of surviving to another breeding season is low. d. individuals should stop reproducing altogether.arrow_forwardHow can you fix the problem of overpopulation of prey (deer) in an ecosystemarrow_forwarda. In our hunt today, what factors besides the interactions between predator and prey, such as weather or surrounding environment, were affecting the population size of each species? Use specific examples.arrow_forward
- Figure 19.6 If the major food source of seals declines due to pollution or overfishing, which of the following would likely occur? a. The carrying capacity of seals would decrease, as would the seal population. b. The carrying capacity of seals would decrease, but the seal population would remain the same. c. The number of seal deaths would increase, but the number of births would also increase, so the population size would remain the same. d. The carrying capacity of seals would remain the same, but the population of seals would decrease.arrow_forwardImagine the birds that eat peppered moths went extinct. What would happen to the peppered moth population?arrow_forwardWhich of the following is associated with the reproductive potential of a species? a. few offspring b. many offspring c. semelparity d. fecundityarrow_forward
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