Question #2 Multiple Choice Which of the following has increased agricultural efficiency the most? the use of crop specialization the use of animals the use of crop rotation the use of machinery

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.

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the:

Which feature of a human community is similar to a niche in a biological community