banner, protection, pollution
earth, globe, protection
city, sun, clouds
pollution, factory, river
power station, smog, industry
contaminated, water, glass
factory, chimney, smoke
ink, water, paint
air pollution, smoke, environment
earth, globe, protection
environmental, pollution, environment
dock, cable innovator, air pollution
fishing nets, networks, fishing
pollution, rubbish, waste
tire, rubber, pollution
heavy water factory, chemical disaster exercise, calamity
concepts, garbage, pollution
