Trash Cemetery on Snezka, Picture 3, Kralovehradecky kraj, Bohemia(CZ), 2015

This "trash cemetery" attempts to explain the harm done by litter, and by solid waste in general, due to slow decomposition rates, showing in this case the decomposition rates of radioactive waste (probably they mean depleted uranium), glass, plastic bottles, aluminum cans, plastic bags, and milk cartons. Again, I'm skeptical of how realistic this is, especially with respect to aluminum cans and plastics. It is striking, however, how radioactive waste is thought to last longer than any of the other forms of waste, although it represents a tiny fraction of solid waste in the world.