Which of these is an abiotic factor in an ocean ecosystem?

This is a primary producer.

An organism whose absence causes the ecosystem to completely change is a

When water goes through a semipermeable membrane from an area of lesser concentration to an area of greater concentration is

Urchin barrens form when

Which of these is not an abiotic factor in the ocean ecosystem?

Plankton is from the Greek word meaning

In kelp, the holdfast looks a lot like a terrestrial plant\'s

Visible Light consists of

_____ light is all colors together; ___ is the absence of all color.

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