Which arrow shows nitrogen fixation? 
A) arrow A
B) arrow B
C) arrow C
D) arrow D
Correct Answer:
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Q19: An owl and a hawk both eat
Q20: Which of the following is an example
Q21: Non- native species that are introduced in
Q22: Camouflage typically evolves as a result of
A)interspecific
Q23: Denitrifying bacteria convert to .
A)nitrogen gas ...nitrites
B)nitrogen
Q25: During ecological succession,the species composition of a
Q26: Eutrophication of a lake could occur if
A)fish
Q27: Within an ecosystem,a tree is a
A)producer.
B)secondary consumer.
C)detritivore.
D)primary
Q28: If an overlap develops between the ranges
Q29: In an ecosystem,you would expect to find
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