1. It’s evidence that this ocean is clean and environmentally________. (pollute) 2. Diseases are primarily due to________ food and air. (contaminate) 3. While some Chemicals may be harmless others can cause________. (damage) 4. Life expectancy has gone down due to________ diseases caused by air pollution. (die) 5. In remote regions, the air is pure and the crops are free of ________ insecticides. (poison) 6. Some scientists warn that light________ damages people and animals. (pollute) 7. Many Chemicals have a________ effect on the environment. (damage) 8. The dumping of________ I sewage into the sea is a source of ocean pollution. (treat) 9. A________ is a substance that makes something dirty, polluted, or poisonous. (contaminate) 10. Water pollution can lead to the________ of aquatic plants and animals. (die) Underline the correct preposition in each of the following sentences. 1. Water pollution can be harmful at / to fish and animals that live along the river. 2. Using drinking water to water the garden is a waste from / of natural resources. 3. Ways must be found to prevent the poisonous gases on / from polluting the air. 4. Textile factories dump tonnes of toxic waste into / at the Citarum River. 5. She’s come up to / with amazing new ideas to help protect the environment. 6. Noise pollution can have harmful effects on / in human health. 7. The overuse of pesticides causes damage in / to the environment. 8. Too much of light pollution results in / of increase in the energy consumption. 9. The river has been polluted with / from toxic waste from local factories. 10. Children should be aware at / of the environmental issues we’re facing.