Food Webs
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The diagram shows a typical food web in a forest ecosystem.

A.
In the food web, which organism would be considered a tertiary consumer?

- mushroom
- mouse
- snake
- hawk
B.
Considering the food web, what would be the most likely impact on the ecosystem if a pesticide is applied to the grass, which causes the grass to die?

- The mouse population would increase from eating more mushrooms.
- The snakes would change their feeding mechanisms from consumers to producers.
- The hawk population would ultimately crash because there was nothing for them to eat.
- The number of mushrooms would increase dramatically due to increased decomposition.
C.
Which position in the food web is occupied by mushrooms?

- primary consumers
- decomposers
- producers
- tertiary consumers