Iam a substance called carbon dioxide.
you breathe me out! my chemical formula is co2 - what am i?
a. an element
b. a compound
c. a mixture

The study of interaction between living organisms and their enviroment is called (a) phytogeography (b) ecology (c) phytosociology (d) ecosystem

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.

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute