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Plants and trees need water for growth and food production. The process through which water is transported throughout a plant begins at the roots. Water absorbed from the roots of a plant will travel through a series of long thin tubes, or veins, that stretch from the stem to the leaves. In this activity, students will conduct a series of hands-on experiments that will demonstrate how the working of these veins, known as capillary action, enables water to travel throughout the length of a plant. Students will learn how the forces of water cohesion and adhesion contribute to the process of capillary action.
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