Besides fixation by photosynthesis a large amount of carbon dioxide may be deposited in the oceans in the chemical form of:
A) Nucleic acids.
B) Calcium carbonate.
C) Lipids.
D) Carbonic acid.
Correct Answer:
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Q21: The term trophic refers to:
A)Competition.
B)Feeding.
C)Symbiosis.
D)Reproduction.
E)Habitat.
Q22: Which of the following is an example
Q23: The subtidal zone is the area:
A)Between low
Q24: Self-regulating of population numbers acts only when
Q25: Nitrogen fixation is performed at sea by:
A)Seaweeds.
B)Cyanobacteria.
C)Phytoplankton.
D)Zooplankton.
E)All
Q27: In competitive exclusion,which of the following is
Q28: An algae begins to produce chemical defenses
Q29: Sessile organisms are part of the:
A)Benthos.
B)Nekton.
C)Plankton.
D)Pelagic type
Q30: In a salt marsh,a fish eats decaying
Q31: Organisms that are classified as benthic would
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