What is a process whereby an ecosystem can renew itself (points 1?

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.

What is the inability of an individual or a society to achieve a minimum standard of living known as ?

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.