Which of the following statements describe the transfer of energy?

-collisions of atoms causing nuclear reactions
-a car speeding up from 5 mi/hr to 40 mi/hr
-a weightlifter lifting 100 lb. bell bar from his chest to a certain height
-a transformer stepping down the voltage of electricity in power lines

Most energy in an ecosystem comes originally from_

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.