Carbon CycleCarbon is attached to some oxygen in the air, which makes the gas carbon dioxide.
Plants use carbon dioxide and sunlight to create their own food and grow. Becauses of humans burning fuels there is about 30% more carbon dioxide in the air then there was 150 years ago. Water CycleThe diagram shows how water rises from the surface of the earth by evaporating, goes into the atmosphere, cools down and condenses into rain or snow in clouds, and falls again to the ground as precipitation.
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The carbon and water cycles come together in the process of Photosynthesis which plants use to create their own food.