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