Based on what you know of photosynthesis, what effect would clearcutting of large forests have on the amount of carbon dioxide in the atmosphere?
a) It would increase the level of carbon dioxide since less photosynthesis would be taking place.
b) The amount of carbon dioxide would be decreased since the trees would no longer be living.
c) There would be no change in carbon dioxide levels since humans put carbon dioxide into the atmosphere by burning fossil fuels.
d) The amount of carbon dioxide would be the same since the reaction rates of photosynthesis and respiration are equal.