Which of the following came first in the scientific study of living organisms?
a. light microscope
b. cell theory
c. electron microscope
d. model of dna

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.

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt

What processes would you expect to be key in the production of yogurt ?