Which process emits carbon dioxide naturally into the atmosphere during the carbon cycle? A ) photosynthesis
B ) Gas combustion
C ) Cement production
D ) Cellular respiration

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.