>>213874465
>>213874505
microplastics come from rubber tires (they wear down, the bits of rubber have to go somewhere), city dust (same thing mostly, vehicles tearing shit up) and synthetic clothing (when they're washed)
normal plastic doesn't just start shedding bits of itself at random, you have to manhandle them, or heat them up, plastic food wrappings produce basically no microplastics unless you do an indian burn on them a bunch before opening them