What happens when cigarettes break down. They're a form of plastic that leach toxic chemicals into the environment. Nearly 4.5 trillion are discarded per year that end up polluting parks, rivers, and oceans.

What happens when cigarettes break down. They're a form of plastic that leach toxic chemicals into the environment. Nearly 4.5 trillion are discarded per year that end up polluting parks, rivers, and oceans.

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