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INTEGRATED SCIENCE PRACTICE QUESTIONS

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ECOSYSTEM

1.

Members of the same species living in the same place at the same time make up the

A.

trophic level.

B.

ecosystem.

C.

community.

D.

population.

2.

The energy needed for natural cycles to operate is obtained from

A.

fossils

B.

the sun

C.

the air

D.

decomposers

3.

Members of the same species living at the same place at the same time make a/an

A.

population

B.

ecosystem

C.

community

D.

trophic level

4.

In the nitrogen cycle, the bacteria that converts nitrates to atmospheric nitrogen is

A.

Nitrifying bacteria.

B.

Denitrifying bacteria.

C.

Nitrogen fixing bacteria.

D.

Putrefying bacteria.

5.

Which of the organisms occupy the first trophic level? (Grass → Grasshopper → Toad → Snake)

A.

Grasshopper

B.

Grass

C.

Toad

D.

Snake

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