Eric throws a basketball straight up into the air. as it rises, which form of energy is increasing?
elastic potential energy
electrical energy
gravitational potential energy
kinetic energy

gravitational potential energy    

Explanation:

A body possess gravitational potential energy due to its position. A body in motion possess kinetic energy. From the law of conservation of energy, energy can neither be created nor be destroyed but it can change forms. When a basketball is thrown straight up into the air, its gravitational potential energy increases while kinetic energy decreases. At the highest point, the ball would have just the gravitational potential energy and zero kinetic energy.

answer; ///(b) it is composed of four protein chains and four heme groups;

weathering is the answer.