Which factor least influences the rate of photosynthesis

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Which factor least influences the rate of photosynthesis

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answer: Lack of water causes the stomata to close, thus reducing the supply of carbon dioxide, thus reducing the intensity of photosynthesis.
light
When light rays hit the chlorophyll molecule, an electron is excited, and its energy is used to synthesize ATP
ATP molecules are used in the dark phase to synthesize carbohydrates.
CO2 concentration and amount of H2O.
These are substrates for photosynthetic reactions.
Few substrates = low speed
Temperature
Any chemical reactions increase their speed with increasing temperature.
Photosynthesis is an enzymatic process, however, enzymes are proteins
If the temperature exceeds a certain limit, then proteins will be denatured and will no longer be able to become enzymes 🙁
Therefore, this will slow down the rate of photosynthesis.