One side-effect of large-scale farming is the pollution is caused by large application of fertilizers and pesticides. One of the most toxic by-products of field run off is/are

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Large-scale farming often involves the heavy use of fertilizers and pesticides, which can leach into nearby waterways and cause an overload of nutrients. This can lead to a rapid growth of algae, known as an algae bloom. As the algae die off, they consume oxygen in the water, creating "dead zones" where fish and other aquatic life cannot survive. So, the toxic by-products of field run off cause algae blooms, not pet poisoning, landfill demand, or cancer.

One Side-Effect of Large-Scale Farming Is the Pollution Is Caused