According to the World Health Organization, ninety percent of the world's population breathes air that is contaminated with pollutants. The organization urges nations to reduce air pollution to prevent seven million deaths a year. Animal agriculture is another major source of pollution, with emissions increasing at an alarming rate. It contributes to extinction of species and the destruction of habitats. By 2050, emissions from animal agriculture will increase by 80 percent. The UN also encourages countries to limit chemical use, minimize the amount of waste they produce, and treat wastewater more effectively.
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