Making Food What is photosynthesis? Photosynthesis is the process by which plants make food from light, water, nutrients, and carbon dioxide.What is chlorophyll? Chlorophyll is the green pigment, or color, found in plants that helps the plant make food. P lants are very important to us. All food people eat comes directly or indirectly from plants. Directly from plants: Indirectly from plants: For example, apples come from an apple tree. The flour used to make bread comes from a wheat plant. Steak comes from a cow, and we all know that cows are animals, not plants, right? But what does the cow eat? It eats grass and grains—PLANTS! So all the foods we eat come from plants. But what do plants eat? They make their own food! What Do Plants Need to Make Food? Plants need several things to make their own food. They need: chlorophyll, a green pigment found in the leaves of plants (see the layer of chlorophyll in the cross-section of a leaf below) light (either natur
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