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Evgen [1.6K]
3 years ago
14

The circulatory system of a whale is considered an organ system because it is composed of different A. cells. B. tissues. C. org

ans. D. molecules. E. heart.
Biology
1 answer:
Gelneren [198K]3 years ago
8 0

Answer:organs

Explanation:the body of multicellular organisms are organised into levels of organization.these levels increases in complexity.

The macromolecules makes up the organelles . organelles in turn makes up the cell.A group of similar cells at a certain location makes up an organ.for example the heart consists of a number of cells.

A group of organs which work together to achieve a specific function in the body , makes up the organs system.

For example the circulatory system of a while is made up of different connected organs - heart, blood vessels,to perform the function of transporting blood around it's body.this makes it an organ system.

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