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Chemistry, 18.08.2019 11:30 hockejoh000
14. how do scientists know that the universe is expanding? the galaxies are moving away from each other, and the temperatures are decreasing. the galaxies are moving away from each other, and the temperatures are increasing. the galaxies are moving toward each other, and the temperatures are increasing. the galaxies are moving toward each other, and the temperatures are decreasing.
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