Photosynthesis into sugar and gaseous oxygen. Photosynthesis is an endothermic reaction, meaning that energy is taking in from the surroundings, and the temperature of the surroundings decreases. [imagelink] <span>Photosynthesis occurs in the leaf. Needs: Chlorophyll – not used up CO2 (from the air) Water (from the soil) Sunlight energy (any light except green light) – not used up Produces: Glucose Oxygen (waste product) Limiting
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