pollution, smoke, factory
earth, globe, protection
city, sun, clouds
banner, protection, pollution
contaminated, water, glass
air pollution, smoke, environment
ink, water, paint
environmental, pollution, environment
pollution, rubbish, waste
earth, globe, protection
factory, chimney, smoke
fishing nets, networks, fishing
dock, cable innovator, air pollution
tire, rubber, pollution
industry, environmental pollution, smog
