Which statements describe processes involved in the accretion of planetesimals and protoplanets? Check all that apply. A- Both involve the melting of solid materials in the nebula.
B- Both involve the formation of solid particles from nebular materials.
C- Both involve the work of the gravitational push on nebular materials.
D- Both involve the trapping of gases and the clumping of masses of matter.
E- Both involve the growing of gas grains with the addition of atoms and molecules.