Which source of thermal energy can be attributed to the growth of a protoplanet?(1 point) Responses radioactive decay radioactive decay impact accretion impact accretion differentiation differentiation gravitational compression

1 answer

The source of thermal energy that can be attributed to the growth of a protoplanet is impact accretion. As materials collide and accumulate to form a protoplanet, the kinetic energy from these impacts is converted into thermal energy, contributing to the heating of the growing body.