Which of the following statements is correct about biogeochemical cycling?
A)The phosphorus cycle involves the recycling of atmospheric phosphorus.
B)The phosphorus cycle is a cycle that involves the weathering of rocks.
C)The carbon cycle is a localized cycle that primarily involves the burning of fossil fuels.
D)The carbon cycle has maintained a constant atmospheric concentration of CO2 for the past million years.
E)The nitrogen cycle involves movement of diatomic nitrogen between the biotic and abiotic components of the ecosystem.

Question

Quizplus · Accepted Answer

The phosphorus cycle is primarily a geological cycle that involves the weathering of rocks and the release of phosphorus into the soil and water. The atmospheric phosphorus is not a major component of this cycle. Option A is incorrect. Option C is also incorrect because the carbon cycle is a global cycle that involves various processes such as photosynthesis and respiration in addition to the burning of fossil fuels. Option D is incorrect because the atmospheric concentration of CO2 has been increasing rapidly over the past century due to human activities. Option E is also incorrect because nitrogen gas is not directly used by most organisms, and it must be converted into other forms such as ammonia through nitrogen fixation.

Which of the Following Statements Is Correct About Biogeochemical Cycling