Chemistry
mendozaalexandr
2015-11-17 16:47:12
What is always included in a comparative investigation? A. a dependent variable B. an independent variable C. a hypothesis D. a scientific question
ANSWERS
Vrbas96
2015-11-17 22:22:12

D- A scientific question, i hoped this helped!

OliveMartines545
2015-11-17 22:23:27

Yes the correct answer is D.

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