3 years ago

PLEASE HELP ILL GIVE BRANLIEST TO THE RIGHT ANSWER

2 answers:

6 0

2! the other answers such as 4 are wrong because scientific experiments can be performed more than once (they should be performed several times to increase validity and reliability), and hypotheses can be wrong! experiments don’t only have to be performed in nature either!

otez555 [7]3 years ago

3 0

Answer:

Explanation:

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