The carbon cycle controls how much carbon dioxide is present in the atmosphere. Combustion, photosynthesis and respiration all take part in this cycle. In what ways do these processes change the amount of carbon dioxide in the atmosphere?
- Acombustion increases, photosynthesis increases, respiration increases
- Bcombustion increases, photosynthesis decreases, respiration increases
- Ccombustion decreases, photosynthesis increases, respiration decreases
- Dcombustion decreases, photosynthesis decreases, respiration decreases