This is converted into food by the process of
photosynthesis

Sunlight

Explanation: Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

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Is that excretion is the process of removing]] or ejecting material that has no further utility, especially from the body; the act of [[excrete|excreting while transpiration is (botany) the loss of water by evaporation in terrestrial plants, especially through the stomata; accompanied by a corresponding uptake from the roots.

Explanation: