Question

which disruption in the water cycle would most likely affect photosynthesis? heat causing an excess of transpiration heat causing an excess of evaporation heat causing an excess of condensation heat causing an excess of precipitation

Explanation:

Photosynthesis requires water. Excess transpiration due to heat can lead to water - stress in plants, reducing the amount of water available for photosynthesis. Evaporation, condensation, and precipitation are more about the movement of water in the general environment rather than directly affecting the water available for a plant's photosynthesis process.

Answer:

heat causing an excess of transpiration