What is the largest reservoir for the nitrogen cycle?
Stability & Change in Ecosystems Version A

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Science
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9th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
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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