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Which phrases describe oxygen's roles in earth’s atmosphere? check all that apply. allows fuels to burn forms clouds that produce rain is the gas that animals breathe is used by plants to produce food forms ozone that absorbs the sun's harmful rays

Which of the following is the unit of measurement used to describe the severity of an earth quake? velocity, magnitude, volume, density.

Which of the following situations is most likely to arise when a crowded city is unable to provide its residents with sufficient sanitation?