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Oxygen is a chemical element that constitutes 21 percent of the Earth's atmosphere, that is capable of combining with all elements except some noble gases, that is active in physiological processes of almost all known organisms, and that is involved especially in combustion — see Chemical Elements Table.
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good day (≧▽≦)
A. True
(Typing this so it can fit the character limit)
9 weeks is the answer ik health :D
Answer:
A. are difficult to distinguish from other illnesses is the correct answer.
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Answer:
Vital registration is the system by which a government records the vital events of its citizens and residents.
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