What is an important adaptation to human hands

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.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone