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How is carbon dioxide useful for humans?

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Plants and some microbes use a biochemical process called photosynthesis to make food by using up carbon dioxide. These organisms combine carbon dioxide and water to produce carbohydrates while giving off oxygen. ... Without carbon dioxide in the atmosphere, Earth's climate would be much cooler. read more

Benefits to Humans Far from being a pollutant, rising atmospheric CO2 concentrations will never directly harm human health, but will indirectly benefit humans in a number of ways. Chief among these benefits is global food security. read more

Carbon dioxide is a chemical compound consisting of one part carbon and two parts oxygen and represented by the chemical formula CO 2 . For a number of reasons, carbon dioxide is one of the most important gases on Earth. read more

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