II. Complete the second sentence so that it has the same meaning to the first one.
1. I think you should use energy efficient light bulbs.
If I_________________________________________________________________
2. He produced a great idea for our environmental project.
He came_____________________________________________________________
3. Because she was absent from the meeting, she didn’t know the resolution.
Because of___________________________________________________________
4. I won’t take part in the volunteer program because I don’t have enough free time.
If I_________________________________________________________________
5. We need to reduce our plastic waste, otherwise we’ll threaten our own existence,
If we________________________________________________________________

6. Due to the hurricane last night, I was without electric power.
Since there___________________________________________________________
7. People dumped toxic waste Products into the rivers or landfill sites.
Toxic waste products___________________________________________________
8. Air pollution deaths will double by 2050 if nations don’t act.
Unless_______________________________________________________________
9. As the world’s temperatures rise, the Arctic keeps losing its ice.
Due to_______________________________________________________________
10. I live by the sea, so I’m really worried about global warming.
If I__________________________________________________________________

XIII. 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.

XII. Use the correct form of the word given to complete each sentence.
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.

XI. Complete the sentences with the correct form of the verbs in brackets.
1. If we________ (not recycle) paper now, we’ll need to cut down more trees in the future.
2. If the local people________ (have) fresh water, they wouldn’t have to use polluted water.
3. What________ (happen) if radioactive material was not handled properly?
4. If we recycle more household waste, there________ (be) less damage to the environment.
5. If we________ (not understand) environmental problems, we would not be able to do
anything about them.
6. If the polar ice-caps melted completely, Sea levels worldwide________ (rise) about 60
metres.
7. The amount of plastic in the ocean________ (increase) if we________ (not take) action
now.
8. These fish________ (not die) if the factory ________ (not dump) its toxic waste into the
river.
9. There ________ (not be) enough oxygen if we ________ (not protect) the rainforests.
10. If I ________ (be) the President, I ________ (ban) billboards in cities in order to reduce
visual pollution.