2.     People can combat wastefulness by ______________________________________.

3.     Factories contaminate drinking water when _______________________________.

4.     In the future, countries may give rise to water wars because___________________.

5.     Wells will deplete groundwater faster if __________________________________.

6.     Scientists help to purify dirty water so that ________________________________.

7.     Ignoring climate change will intensify the situation because ___________________.

8.     Environmental activist must address a water crisis by ________________________.

2- using less water at home

3- they dump chemical waste into sea

4- every countries will need much water to survive

5- Farmers use too much water

6- we can use it again

7- the weather will get hotter

8- teaching people how to save water