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How does plastic pollute the environment?

Most conventional plastics are not biodegradable. Instead of breaking down completely, it forms smaller pieces called microplastics, which can last on Earth for centuries. Manufacturers have produced “biodegradable plastic” that can break down, but only through industrial composting, which is not common in the U.S. Plastic waste affects many areas of the natural environment, especially the oceans and the biodiversity of its ecosystems.