Unit Test Answers

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Bird:

producer

consumer

decomposer

Earthworm:

producer

consumer

decomposer

Flower:

producer

consumer

decomposer

Butterfly:

producer

consumer

decomposer

Phytoplankton are .

autotrophs

heterotrophs

neither

What would you expect to happen if sea otters were removed from this food web? Check all that apply.

The population of elephant seals would decrease.

The population of kelp crabs would increase.

The population of kelp would increase.

The population of sea urchins would decrease.

If the grass contains 100,000 kcal of energy, how much energy will a fox obtain from eating a bird?

10,000 kcal

1,000 kcal

100 kcal

10 kcal

Both the salmon and the grizzly bears are .

producers

consumers

decomposers

Grizzly bears are .

primary consumers

secondary consumers

tertiary consumers

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