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Which substance has the highest density at room temperature? A.) Hydrogen B.) Oxygen C.) Water D.) They are all the same
answered
Apr 20, 2017
History
high-school
6
votes
190k
views
While playing a game, you move back 5 spaces with the roll of the number cube. Your friend moves forward 3 spaces. Write each amount as an integer.
answered
Mar 25, 2017
Mathematics
middle-school
4
votes
38.9k
views
People and animals breathe in oxygen from the air and exhale carbon dioxide. What happens to the carbon dioxide in the air? A. Some animals breathe in carbon dioxide and exhale oxygen. B. The carbon dioxide
answered
Feb 7, 2017
Biology
high-school
7
votes
69.7k
views
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