Productivity is the amount of carbon fixed by organisms through the synthesis of organic matter using energy derived from_______ and _______ .
A) photosynthesis; hydrothermal
B) hydrothermal; available nutrients
C) chemosynthesis; photosynthesis
D) chemosynthesis; hydrothermal
E) none of these
Correct Answer:
Verified
Q18: The dissolved materials in seawater are thought
Q19: The total amount of solid material dissolved
Q20: What happens when fresh water flows into
Q21: Hydrothermal vents provide a unique deep sea
Q22: Density in seawater is determined by_
Q24: Most marine animals live near the surface
Q25: Why is productivity low in tropical regions?
A)
Q26: Productivity of diatoms is highest in _
Q27: Organisms, such as algae and bacteria, that
Q28: Fish most commonly live_ .
A) in
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