The Cycles of Matter Answers

The sun is the ultimate source for energy on the Earth.

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

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

Nitrogen fixation _______.

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?

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

What do the carbon, oxygen, and nitrogen cycles all have in common?

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

Which of the following does not cycle into the atmosphere?

The need for energy, gained by respiration and photosynthesis, is the driving force of the oxygen cycle.