The population cycles of lemmings in the arctic
A. occur because of the severe winters.
B. involve interactions between lemmings and their predators.
C. occur because lemmings are K-strategists.
D. occur because of density-independent limiting factors.
Answer: A
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Glaciers were abundant during the Precambrian. Indicate whether the statement is true or false
The surface air around a strengthening low pressure area normally __________, while aloft,
above the system, the air normally __________. a. diverges, diverges b. diverges, converges c. converges, converges d. converges, diverges
How might differences in climate (dry or humid,
hot or cold) affect the possibility of harvesting water from the atmosphere? What will be an ideal response?