As a person is flexing their arm, their biceps, brachialis and about their elbow joint (ignore any other muscles present at the elbow). at one point during the movement, the magnitudes of the forces in two of the muscles were: biceps

idk let me see fdfdgdg

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers

it is a. i hope this .