Photosynthesis and Cellular Respiration Answers

Which of the following two cycles are the most closely related in their role in sustaining life?

Which of the following does not cycle into the atmosphere?

Biogeochemical cycles recycle water and natural elements throughout the biosphere to ensure that organisms do not run out of these substances. Thiobacillus denitrificans is a specialized species of bacteria that obtains its energy from carbon dioxide and inorganic nitrogen-containing compounds such as nitrates in its environment. It is used in the bioremediation of groundwater that contains excess nitrate. How does Thiobacillus denitrificans help bioremediate groundwater?

Which of the following does not take place in the water cycle?

Which of the following statements is true?

What percentage of precipitation falls back onto land?

The carbon cycle involves an exchange of carbon between the atmosphere and geosphere only.

Biogeochemical cycles recycle water and natural elements throughout the biosphere to ensure that organisms do not run out of these substances. Diagram by NASA/Kevin Saff Diagram by Ilmari Karonen Which of the following processes plays an important role in cycling carbon, nitrogen, and phosphorus?

Photolysis is a part of which cycle?

Biogeochemical cycles on Earth serve a variety of different purposes. What do the biogeochemical cycles have in common?