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Neither crops nor cows are pollutants. Pollutants are substances which pollute or contaminate essential life "elements" of the Earth, like air, water, and earth. While such commodities and animals do contribute to substances which are considered pollutants, such as pesticides, petrolleum-based fertilizers, fossil fuels emitting carbon dioxide, methane gas, and nitrous oxide, respectively, they are not all bad because they are not by-products themselves as all pollutants are.

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11y ago

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