Unit Test Unit Test
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The heart is an example of which level of organization within an organism?
cell
organ
Otissue
organ system
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Organ

Explanation:

The heart is an example of the organ level of organization.

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).