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Svetllana [295]
3 years ago
7

A/an ___ is a type of research that involves observation and collecting data but does not include a control.

Biology
1 answer:
d1i1m1o1n [39]3 years ago
4 0
D. Because experimentation includes a control group. also, independent and dependent variables are part of an experiment they arent a type of research
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loris [4]

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a, b, c are correct

Explanation:

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