As an overall average,about _____ of the energy at one trophic level is available to the next-highest rank in the food chain.
A) 7%
B) 10%
C) 4%
D) 20%
E) 2%
Correct Answer:
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Q31: The net primary productivity is the amount
Q32: In the water cycle,animals return water to
Q33: Secondary consumers are
A) herbivores.
B) bacteria.
C) All of
Q34: The _ cycle begins with the weathering
Q35: You go on a canoe trip to
Q37: A food chain is a series of
Q38: Carbon returns to the atmosphere
A) as carbon
Q39: Nitrogen-fixing bacteria convert atmospheric N2 into
A) nitrates.
B)
Q40: Biomagnification usually happens for chemicals that
A) are
Q41: After developing a yeast infection in the
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