Which describes nuclear fusion?(1 point) Responses starts when two atoms slam together, causing the larger atom to split into two smaller atoms starts when two atoms slam together, causing the larger atom to split into two smaller atoms starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms starts when two atoms slam together to form one, heavier atom starts when two atoms slam together to form one, heavier atom starts when a neutron slams into an atom, causing two atoms to form one, heavier atom

The correct answer is: starts when two atoms slam together to form one, heavier atom.

Nuclear fusion starts when two atoms slam together to form one, heavier atom.

Nuclear fusion is a process that occurs when two atoms join together to form one, heavier atom. This process releases a large amount of energy. In this case, the correct description is: "starts when two atoms slam together to form one, heavier atom."