How does the circulatory system work at the tissue level? A) The heart pumps the blood.
B) Blood cells carry nutrients.
C) Cardiac muscle contracts.
D) Nutrients are delivered throughout the body.

The answer c
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C - Cardiac muscle contracts . ^

Monophony monophony means music with a single "part" and a "part" typically means a single vocal melody, but it could mean a single melody on an instrument of one kind or another.( just a short note ) : )hope it