Nuclear fusion a. takes place in the sun c. can be controlled in the laboratory b. occurs at low temperatures d. is used in medicine

Most scientific questions are based on opinions. hypotheses. observations. experimental data.

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks