Vocabulary 6. Underline the correct answer. 0. Factory fumes / smokes pollute the Earth. 1. The Earth is getting warmer because of pollution. This is called global / climate warming. 2. Factory fumes and car exhaust fumes increase pollution levels in the Earth's atmosphere / environment. 3. We should clean up/recycle paper, glass and plastic. 4. People in Britain drop / waste water every day. 5. People cut down /cut up thousands of acres of rainforest every day.​