NPP is the difference between plant photosynthesis and respiration.Therefore,NPP quantifies the net absorption of what element(s) by living plants?
A) carbon
B) phosphorus
C) nitrogen
D) oxygen
E) nitrogen,phosphorus,and potassium
Correct Answer:
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Q10: Which of the following are true about
Q11: Only about _ of the sunlight falling
Q12: With almost no exceptions,the nitrogen fixers are
A)beans.
B)green
Q13: Solar energy is the same thing as
Q14: A(n)_ is a permeable underground layer of
Q16: Which of the following biogeochemical cycles contain
Q17: Which of the following atmospheric gases is
Q18: Heterotrophs must obtain organic molecules that have
Q19: The upper,unconfined portion of the groundwater constitutes
Q20: A _ cycle is a cyclic path
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