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| Threadlike cells on a root that take in water and minerals from the soil. Most plants have root hairs. |
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| A protective layer on a leaf. It helps keep the leaf from losing water and drying out. |
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| Pores in the bottom of leaves that open and close to let in air or give off water vapor. |
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| A plant's release of excess water vapor through the stomata on the underside of its leaves. |
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| A green substance in plant cells that helps plants make food by trapping the Sun's energy. |
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| A process in plants that uses energy from sunlight to make food from water and carbon dioxide. |
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