Environmental PollutionOnline version In this game, kids will brainstorm and try to figure out the right things. This is a perfect game for testing their memory! by Shanzey Ahmed . 1 Non- Biodegradable materials 2 Biodegradable materials Sewage sludge e-waste metallic wastes dead plants and dead animals nuclear waste ball point pen filters plastic Food waste synthetic fiber cans Paper waste slaughterhouse waste