What are two chemicals used in testing for protein other

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

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.

Which label correctly identifies what x represents in the concept map?