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.
You might also like to view...
With respect to air, water, and material resources, which of the following is true?
A) A forest is a closed system. B) A forest is an open system. C) A forest is an open system in terms of air, but closed in terms of material resources. D) A forest is an open system in terms of water, but closed in terms of energy resources.
Which of the oceans has, by far, most of its surface south of the Equator?
A) Arctic B) Atlantic C) Pacific D) Indian E) Peruvian
Which condition is necessary for a population to grow?
A. Mortality must exceed natality. B. Stabilization must occur. C. Carrying capacity must occur. D. Birthrate must exceed death rate.
The Montreal Protocol is a UN agreement that is intended to ________
A) reduce air pollution globally B) reduce ozone in the atmosphere C) reduce CO2 in the atmosphere D) reduce CFCs in the atmosphere E) make everyone feel good about the environment without really fixing anything