Question

how does photosynthesis contribute to the carbon cycle?
it sequesters carbon in fossil fuels.
it promotes the burning of fossil fuels.
it removes carbon dioxide from the atmosphere.
it creates nuclear radiation.

Explanation:

Photosynthesis is a process where plants use sunlight, water, and carbon dioxide ($CO_2$) to produce glucose (a form of stored energy) and oxygen. The key reaction is \(6CO_2 + 6H_2O \xrightarrow{light} C_6H_{12}O_6+6O_2\). In the carbon cycle, carbon exists in various forms like \(CO_2\) in the atmosphere. During photosynthesis, plants take in \(CO_2\) from the atmosphere (this is the removal of \(CO_2\) from the atmosphere part). Sequestering carbon in fossil fuels is a long - term geological process not directly part of the photosynthesis mechanism in the short - term carbon cycle. Burning of fossil fuels releases \(CO_2\) (opposite of what photosynthesis does). And photosynthesis has no relation to creating nuclear radiation.

Answer:

It removes carbon dioxide from the atmosphere.