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The Nitrogen Cycle Quick Check
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Question
How do humans impact the nitrogen cycle in a way that is harmful to ecosystems?(1 point)
Responses

Humans significantly reduce the number of organisms that can fix nitrogen.
Humans significantly reduce the number of organisms that can fix nitrogen.

Humans use artificial fertilizers that add too much fixed nitrogen to some ecosystems.
Humans use artificial fertilizers that add too much fixed nitrogen to some ecosystems.

Humans add excess nitrogen into the atmosphere by eating food.
Humans add excess nitrogen into the atmosphere by eating food.

Humans exhale excess nitrogen into the atmosphere.
Humans exhale excess nitrogen into the atmosphere.
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All Answers 1

Answered by GPT-5 mini AI
Humans use artificial fertilizers that add too much fixed nitrogen to some ecosystems. This excess nitrogen causes problems like algal blooms and dead zones.