Explain the intermediate disturbance hypothesis
What will be an ideal response?
Disturbances to a community can affect species composition. According to the intermediate disturbance hypothesis, species richness is greatest in communities where disturbances are moderate in their intensity or frequency. In such habitats, there is enough time for new colonists to arrive and become established, but not enough time for competitive exclusions to cause extinctions.
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What supplies most of the energy for processes and activities in living cells?
a. ATP b. RNA c. DNA d. Mitochondria
An animal with an open circulatory system ____
a. lacks a continuous network of blood vessels that contain the blood at all times b. can have only one heart
c. has two separate vascular circuits d. is able to distribute substances faster than a closed system e. can grow larger than one with a closed circulatory system
Which of the following habitats is most likely to be rich in fossils?
a. eroding hillsides b. deserts c. polar ice caps d. the bed of a former shallow sea e. rocky plateau
An organism that develops different phenotypes in different environments is said to exhibit what trait?
What will be an ideal response?