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When we say that an experiment is controlled, we mean that _____. A. the outcome is certain B. the theory has already been supported C. there is only one theory being tested by the experiment D. there

asked Mar 13, 2017

Biology
middle-school

2 answers

5 votes

203k views

What were the causes of the Mexican-American War?

asked Jul 28, 2016

History
high-school

2 answers

3 votes

92.5k views

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