As a young biologist, Charles Darwin had expected the living plants of temperate South America would resemble those of temperate Europe, but he was surprised to find that they more closely resembled the plants of tropical South America. The biological explanation for this observation is most properly associated with the field of

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#Question id: 5161

#General Aptitude

Find the unit digit of 83 × 87 × 93 × 59 × 61. 

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#Question id: 8852

#Section 2: Evolution

The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data?

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#Question id: 12363

#Section 1: Ecology

Relative to populations with long prereproductive periods, populations with short prereproductive periods tend to

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#Question id: 10664

#Section 1: Ecology

dN/dt = rN (K-N/K ) The logistic equation above is used to describe the rate of change of a population, N, with time, t, Where r is the intrinsic rate of increase and K is the carrying capacity. What is value of per capita growth rate when population size is 200 individuals? ( K= 400, r =.25)

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#Question id: 12673

#Section 5: Applied Ecology & Evolution

Burning fossil fuels releases oxides of sulphur and nitrogen. Ultimately, these are probably responsible for