I understand that plastics are bad for the environment but why are they so much worse then any other rocks and sand that are always present. If plastics can’t biodegrade why can’t they be considered as a somthing like sand after a certain point.
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When talking about really small particle size, it’s not completely clear that plastic is worse. What is clear is that we’ve been living around, eating, and breathing in small particles of rock since long before we were human. The concern is more about how contaminated our entire ecosystem is with plastic and the potential problems with that.
When it comes to larger pieces of plastic pollution, particularly in the ocean, the issue is more of the shape than the material. Floating pieces of net and plastic bags are worse than rocks sitting on the bottom. (Concrete has its own issues as other commenters have said.)
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