- chlorophyll
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The green coloring matter of plants that is found in chloroplasts and is necessary for photosynthesis
- Hemisphere
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One of the halves of the earth as divided by the equator. There is a northern and southern half.
- photosynthesis
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The process by which plants that contain chlorophyll make carbohydrates from water and from carbon dioxide in the air in the presence of light.
- structure
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Something constructed or arranged in a definite pattern of organization.