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Greenhouse photo courtesy of Getty Images.

Plants

Plants are diverse organisms, differing in size and shape and ranging from single cells such as algae to complex organisms such as trees. Through photosynthesis, plants provide the planet with food, oxygen, and energy. In addition, they are used to produce fiber, medicines, building materials, and natural products such as oils and latex. Plants are essential to human diets and enliven and sustain the environment.

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