Exchanging oxygen and carbondioxide between air and lungs because it just involves breathing system but everything else involves hormones.........
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Answer:endocrine gland
Explanation: these are duct less glands
Explanation:
it affects the temperature bcs where the sun hit example the equator it wont snow bcs its hot and in Antarctica its snow bcs it rarely can be exposed to sunlight and one of the reason to is bcs the earth rotates on its axis that why there day and night
DNA molecules are arranged as a tightly coiled helix
Meiosis produces gametes in animals.
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