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why are more common bone fractures among senior citizens than among young people

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

All motion is caused by force? true or false