Around the Grand Canyon the predators of deer were largely exterminated by people. The deer population grew rapidly as a result of the lack of predators until the deer exhausted their food supply.
This led to a massive die-off (known as a population crash) and hundreds of deer died of starvation. The point at which the food supply no longer supported the large deer population can best be considered a A) model.
B) metastable equilibrium condition.
C) threshold.
D) dynamic equilibrium condition.
Question 2
Water covers approximately ________ of Earth's surface.
A) 50 percent
B) 90 percent
C) 25 percent
D) 71 percent
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