Question

it is crucial to study ocean microbes because a. they control the major biogeochemical cycles that keep earths biosphere in balance b. they are a significant source of greenhouse gases and pollution c. they are frequently used as food sources in developing nations d. they provide a significant alternative energy source used to replace coal and oil please select the best answer from the choices provided.

Explanation:

Ocean microbes play a crucial role in biogeochemical cycles which are essential for maintaining the balance of Earth's biosphere. They are not primarily known for being a food - source in developing nations, a major source of greenhouse gases and pollution, or as an alternative energy source to replace coal and oil.

Answer:

A. they control the major biogeochemical cycles that keep Earth's biosphere in balance