use cause and effect relationship to explain why a convection current forms when hot rocks and cold rocks are placed in a tank of water.

the hot rocks heat up the water around it, serving as a medium. then that heat warms up the cold rock until everything in the tank is the same temperature..

Explanation:

sorry for that pos above.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

bcde is the incorrect answer it is a