3 years ago

15 POINTS RIGHT NOW!!!!

Chemistry

2 answers:

Anettt [7]3 years ago

5 0

Answer:

It is valid because his experiment had clear variables.

Explanation:

He had clear variables and did everyhting the same for both plants, even though he had calcium in one and not in the other, which gives him a true and good result.

tensa zangetsu [6.8K]3 years ago

3 0

Answer:

<h2>It is invalid because his sample size is small Option B</h2>

Explanation:

got it right on the test have a great day :3

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