Answer :

The synthesis of carbohydrates and oxygen by green plants in the presence of sunlight and chlorophyll is known as photosynthesis.
external factors which influence photosynthesis are
Light intensity-mainly from the sun
carbon dioxide concentration- determined by the atmospheric gaseous levels
enzymes
temperature of the surrounding.
Factors which affect Photosynthesis are:
Co₂ Concentration-The concentration of Co₂ ranges from 0.03-0.04%.It is found that ).1% of Co₂ Increases the rate of photosynthesis in considerable amount.
Temperature-An optimum amount Temp.25-35% is required for a good rate of photosynthesis.
Chlorophyll Concentration-this also affect the photosynthesis rate,larger the amount good is the rate.
Water-this also affect the rate as chlorophyll does but it is needed in balanced amount more than that can cause damage to the plant.
hope this will help u.

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