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1. A control group differs from an experimental group:
A. in the number of test organisms used.
B. by the independent variable.
C. in several ways.
D. in no way.

is it A


2. A theory and a hypothesis are different in that:
A. you must have a theory before you can form a hypothesis.
B. a theory is developed as a result of broad agreement among scientists and a hypothesis is a much less substantiated idea.
C. a theory is much easier to disprove than a hypothesis.
D. a theory can never be disproved while a hypothesis can.



is it B

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