What term means that organisms are structurally and functionally related?

As global warming continues the ocean absorbs more of the earth's heat what term describes the ocean as a storage location for heat a) heat binb) heat sinkc) heat storaged) heat vent( answer this for me)

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last

Everything that surrounds a particular organism