Energy from___ supply about 70 percent of the generation of electricity in the United States

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

Coral have a symbiotic relationship with what in order to eat?

Examine the air pressure map. which type of line is shown on the map?