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A stoma is a pore found in a leaf's epidermis. This pore is used primarily for gas exchanges (carbon dioxide/oxygen), but it also has another unavoidable function. That function is decreasing the water in the leaf. The water evaporates and leaves the leaf through the stoma. In a dessert, this would be particularly harmful to the plant, as the heat would evaporate more and more of the water, which can then escape through the stomata, dehydrating the plant.

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13y ago

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