Fusion requires a extremely low temp for the reaction to occur? t of f?

Question

in fission reaction, one neutron is produce for every neutron used in the reaction? t or f

uranium is used as a reactant in the fission reaction? t or f

fusion is safer for the environement than fission? t or f

Answer 1

That is false. Fusion requires extremely high temperatures.

That is true.

That is true. Uranium is the initial radioactive material.

That is true. Fusion is much safer.