Amount of dissolved oxygen consumed by aquatic microorganisms.

This type of habitat allow organisms to inhabit areas at higher elevation (relative to sea level) than they would normally be found and can have very specialized communities?

  Which of the following ideas was at the center of the religious doctrine of John Calvin?  

These resources result from the deposition, precipitation, or accumulation of useful substances in the ocean or seabed

What type of primary production occurs at hydrothermal vents?

Toxic burden of a large number of organisms at a lower trophic level is accumulated and concentrated by a predator at a higher trophic level.

If something doesn’t dissolve in water we call it?

These are organisms that live in the substrate?

This is the greatest source of oil in the marine environment?

This is an important herbivore in kelp forests?