Wht is the orbital radius in kilometers

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

Explain light independent reactions

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.