امتحان ساينس Science -Concept (3.2)- lesson 5 -نموذج3 -الصف الخامس - الترم الثاني

We can conserve water by Recycling water.

........... leads to soil pollution that causes death of plants and animals.

The Job of ........... is design tools that provide us with clean water

Non - renewable such as  ...........

............  removing harmful materials from water

...........A building established across a river which can hold water behind it     

.............  They are stations which recycle waste water by removing harmful materials from wastewater to reuse it

Renewable resources can be used up if people don’t use them wisely.

When fresh water polluted .it becomes ............ 

You can make clean water by adding mud to clear water.