Answer: B. Closed
In a closed circulatory system is the one in which the blood is circulated to all the parts of the body of the organism through vessels of different length and width. In this system the blood is pumped from the heart through blood vessels where it is transported to different organs and cells of the body instead of filling up the body cavity.
Supply oxygen to cells for cellular respiration.
C. Cells
Cells make up organs, which make up organisms, which make up populations
Answer:
It going to be your gut that helps the ears and stomach fight the body
Explanation:
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