Complete the sentences with the correct form of the verbs in brackets

 
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XI. Complete the sentences with the correct form of the verbs in brackets.
1. If we
2. If the local people
(not recycle) paper now, we'll need to cut down more trees in the future.
(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.
(not be) enough oxygen if we
(not protect) the rainforests.
(ban) billboards in cities in order to reduce
9. There
10. If I
(be) the President, I
visual pollution.