Coal: converts mechanical energy of into electricity. the Sun
water
steam
wind

Energy flows from the producer level to the level. is called

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air