1.What would happen if water pollution stopped?(if 2)

2.Would we be happy if air pollution in the world were a better place?(if 2)

3.If there were no pollution,would the world be a better place?(if 2)

4.If I were you,I would take these bottles to the bottle bank.(if 2)

5.If people don't really care the enviroment,they won't save it.(if 1)

6.The river wouldn't be so polluted if the factories didn't dump the waste into it.(if 2)

7.We would be less worried if oil spills didn't have such destructive effects.(if 2)

8.If we destroy the ozone layer,what will save us from the UV rays?(if 1)