The document discusses the main parts of plants including roots, stems, leaves, flowers and fruits. It then explains photosynthesis as the process by which plants convert carbon dioxide into sugars using sunlight. Photosynthesis occurs in plants and uses carbon dioxide and water, releasing oxygen. Finally, it defines different types of plants - trees have a main trunk and branches, shrubs have multiple stems and are shorter, and grasses are herbaceous plants with narrow leaves growing from the base.
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