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That is a question that can't be adequately or even approximately answered, but a ballpark answer would be: "When the Industrial Revolution started".
Wiki User
∙ 13y ago
Agricultural activities began impacting the environment around 10,000 years ago, with the advent of practices such as deforestation and soil erosion. Industrialization in the 18th and 19th centuries significantly accelerated pollution levels through the release of harmful chemicals and emissions into the air, water, and soil.
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