Multiple Choice
Which of the following represents a step in the nitrogen cycle?
A) Nitrogen-fixing bacteria convert atmospheric nitrogen to nitrates.
B) Nitrites bind to soil particles.
C) Nitrogen-fixing bacteria convert atmospheric nitrogen to ammonia.
D) Denitrifiers convert ammonium to atmospheric nitrogen.
Correct Answer:

Verified
Correct Answer:
Verified
Q7: About how much of the energy in
Q13: Within an ecosystem, a tree is a<br>A)
Q31: The flow of _ into ecosystems occurs
Q42: In an ecosystem, you would expect to
Q43: Carbon mainly cycles between the biotic and
Q44: When two different populations in a community
Q51: During ecological succession, the species composition of
Q52: One of the most worrisome results of
Q53: In a certain ecosystem, field mice are
Q56: In a hypothetical food chain consisting of