Biogeochemical cycles on Earth serve a variety of different purposes. What do the biogeochemical cycles have in common? a. They all serve the same function in sustaining life on Earth.
b. They all include only nonliving components of an ecosystem.
c. They are all essential for sustaining life on Earth.
d. They all include only living components of an ecosystem.

Oh thanks for asking the answer is...
C. They are essential for sustaining life on Earth

Edge 2020-2021
Didn't see Q&A on so I took it upon myself

What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.

What occurs to the cell during mitosis

Which characteristics are typical of a human population in the postindustrial stage?