The best explanation for very little amount of phosphorus entering the aquatic systems is that a gaseous phase of phosphorus cycle is absent due to which movement of phosphorus within oceanic reservoirs is too slow.
The question is incomplete. The complete question is:-
Which of the following statements best explains why very little amount of phosphorus enters the aquatic systems?
a)Phosphorus is very stable in the atmosphere and stays there for a long time.
b) Catalytic converters in automobiles have greatly reduced the amount of phosphorus in circulation.
c)Since there is no gaseous phase in the phosphorus cycle, the movement of phosphorus within oceanic reservoirs is very slow.
d)The phosphorus cycle takes place so fast that it does not remain in any single reservoir for a very long duration.
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