Newton's third law says that for every force there is an equal reaction force in the opposite direction. what does this imply about the force of gravity associated with a person standing on the earth?

This imply that the force applied by the gravity of the earth on the person, is equal to the force applied by the person on the earth.

According to the Newton's third law, for every force there is an equal reaction force, in the case of person standing on the earth, the gravity of the earth pulls the person by the same magnitude as the force applied by the person on the earth (which is equal to the weight of the person)..

b.a device that inputs heat into a cool object