Stability & Change in Ecosystems Version A

Stability & Change in Ecosystems Version A

Assessment

Flashcard

Science

9th - 12th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the largest reservoir for the nitrogen cycle?

Back

The atmosphere.

2.

FLASHCARD QUESTION

Front

What is responsible for most environmental problems of excess nitrogen and phosphorus entering streams, lakes, and oceans?

Back

Agriculture & household runoff.

3.

FLASHCARD QUESTION

Front

Why is the cycling of matter important?

Back

Only a limited amount of matter is available, so it has to be recycled.

4.

FLASHCARD QUESTION

Front

How do animals obtain the nitrogen they need?

Back

By eating other organisms.

5.

FLASHCARD QUESTION

Front

Which of the following is NOT a process of the water cycle?

Back

Fixation.

6.

FLASHCARD QUESTION

Front

Define the nitrogen cycle.

Back

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including atmospheric nitrogen, organic nitrogen, and inorganic nitrogen.

7.

FLASHCARD QUESTION

Front

What role do bacteria play in the nitrogen cycle?

Back

Bacteria convert atmospheric nitrogen into forms that plants can use, such as ammonia.

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