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Some planktoic cyanobacteria have the ability to "fix" which of the following elements thus having a fertilizing effect on the marine environment similar to the ability of the land plants legumes?
Q3: Which are characteristics of clonal selection?<br>A) The
Q7: One group of parasites of fishes,seabirds,and other
Q7: How is passive transport described?<br>A) It is
Q7: If a rocky shore highly exposed to
Q23: Which of the following is not true
Q24: Which of the following is the second
Q34: Cods and related fishes are demersal.As a
Q36: Proteins are primarily an intracellular buffer.
Q47: What is a consequence of leakage of
Q50: When a second message is necessary for