The viceroy butterfly (limenitis archippus) resembles the queen butterfly (danaus gilippus), a species toxic to birds because of alkaloids it stores during larval development from the milkweeds it feeds upon. The viceroy butterfly is an example of what kind of defense against predation?

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#Question id: 10615

#Section 2: Evolution

The population size of a bird increased from 600 to 700 in one year. If the per capita birth rate of this population is 0.50, what is its per capita death rate?

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#Question id: 12674

#Section 5: Applied Ecology & Evolution

You  have  a  friend  who  is  wary  of  environmentalists? claims  that  global  warming  could  lead  to  major  biological change on Earth. Which of the following statements can you truthfully make in response to your friend's suspicions?

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#Question id: 12375

#Section 1: Ecology

When lichens grow on bare rock, they may eventually accumulate enough organic material around them to supply the foothold for later rooted vegetation. These early pioneering lichens can be said to do what to the later arrivals?

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#Question id: 11409

#Section 5: Applied Ecology & Evolution

Species characteristics that make them less prone to extinction are listed below:

A. Narrow niche and specialized

B. High dispersal power

C. High trophic status

D. Long life span

Which of the following is the correct combination?

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#Question id: 4595

#Section 2: Evolution

Currently, two extant elephant species (X and Y) are classified in the genus Loxodonta, and a third species (Z) is placed in the genus Elephas. Thus, which statement should be true?