What inorganic nutrient is required for primary production?
a. Phosphorus
b. Carbonate
c. Oxygen
d. Iodine
ANS: A
Phosphorus and nitrogen are required for primary production. Phosphorus is even more scarce in the
ocean than it is on land. Only one atom of phosphorus is needed for every sixteen atoms of nitrogen
for primary production. Information can be found in the section Marine Life Success Depends upon
Physical and Biological Environmental Factors.
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