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Food Webs Can Be Regulated by Mostly Top-Down or Mostly

Question 72

Multiple Choice

Food webs can be regulated by mostly top-down or mostly bottom-up control.Which is an example of mostly bottom-up control?


A) Australian cactus moths control prickly pear cactus.
B) Coyotes control rodents in a grassland.
C) Lynx control snowshoe hares in the tundra.
D) Sea otters control sea urchins in a kelp forest.
E) Nutrients from upwelling control a coastal ocean ecosystem.

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