Answer:
A healthy ear is filled with air
Explanation:
Answer:
Change in direction
Explanation:
"Rotation" refers to an object's spinning motion about its own axis. "Revolution" refers the object's orbital motion around another object.
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Meiosis occurs in humans, animals, plants and fungi, and its a sexual type of reproduction. The daughter cells are different, cause the chromosomes are mixed. Mitosis is a asexual type of reproduction and the daughter cells are identical.
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The three main worm phyla are flatworms, roundworms, and segmented worms. Roundworms have a digestive tube that has two openings. Segmented worms have a closed circulatory system in which blood is enclosed in blood vessels. These are important steps in the evolutionary development of animals.
A. Metabolic
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