Which cycle most likely includes sunlight, photosynthesis, and respiration?
a.) water cycle
b.) carbon cycle
c.) oxygen cycle
d.) nitrogen cycle

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase