How is a scientific theory developed? A. A single experiment is performed once.
B. An experiment is repeated several times.
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C. One scientist proves his hypothesis with an experiment.
D. Many different experiments are performed and repeated.
SUBMIT

B

An experiment can't be done by one scientist. It needs to be proved by different scientists and in different environments.

prokaryotic cells do not have a nucleus in which the dna is stored in, it floats freely inside the cell.

eukaryote cells do have a nucleus in which the dna is stored in.

currents is the correct answer.