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Bingel [31]
3 years ago
15

Which of the following describes a properly controlled experiment?

Biology
2 answers:
Semenov [28]3 years ago
4 0

Answer:

i think it is either A or B

Explanation:

im so so sorry if the answer is wrong

hopefully this helps tho

Goryan [66]3 years ago
3 0

Answer:b

Explanation:

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