FUTHER PRACTICE 1. Give the correct form of the words in the brackets in each of the following sentences 1. ________ elements have been found in both ground and underground water sources. (pollute) 2. The soil becomes ________ because of the use of so many pesticides and fertilizers. (contaminate) 3. People believe that the ________ water has brought cancer to the local residents. (pollute) 4. A number of cleaning products contain ________ chemicals. (harm) 5. Astronomers are concerned about light because they have ________ in viewing activities in the sky and out space. (difficult) 6. ________ waste spills can contaminate groundwater. (industry) 7. Noise is considers as ________ pollution. (environment) 8. Water samples collected at these villages were seriously ________ with bacterial. (contaminate) 9. ________ habitats have been destroyed in recent years. (nature) 10. Light pollution makes us ________ to see the stars in the sky. (able) 11. The natural__________ beauty of Thodupuzha has attracted many Malayalam movie makers. (scenery) 12. Flags__________ nations, not languages. (symbol) 13. Ayers Rock is also one of the top tourist__________ in Australia. (attract) 14. The Eiffel Tower is the most__________ Parisian landmark. (icon) 15. English is recognized as an__________ language in a total of 67 different countries. (office) 2. Complete the sentences with the verbs in brackets. Use conditional sentences type 1. 1. If the air in a City________ (get) very polluted, it can make people’s eyes burn. 2. If we dump all sorts of Chemicals into rivers, we________ (not be) able to swim in them in the future. 3. Many wildlife habitats will be destroyed if people________ (keep) polluting the environment. 4. If we all use public transport more, we________ (help) reduce air pollution. 5. If we________ (not stop) over-fishing the oceans, many species________ (become) extinct. 6. If everyone________ (recycle) paper, metal and glass, we ________ (not produce) so much rubbish. 7. We________ (have) dirty seafood if we________ (dump) rubbish into the sea. 8. If global warming________ (continue), temperatures________ (rise) even higher. 9. If light pollution________ (keep) growing, you________ (not be) able to see even the Big Dipper at night. 10. We________ (threaten) our own existence if we________ (not cut down) the waste rapidly.