Which term best describes the clam's role in its marine habitat?

a. biotic factor
b. producer
c. protist
d. abiotic factor

The answer is A.

A producer is something like a plant or the Sun.

An abiotic factor, is something like a rock, thats not living.

It would only be correct the the clam is biotic factor in this case.

Hope this helps you!!!

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

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