What order do these go in

Greenthe fossil record is the history of life recorded byhuman observationgod.climatologists.remains of the past.

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.

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?