* We need water to live. * plants and animals also need water to live.

* Water comes from : - ① rain ② river ③ sea ④ ground water.

* We store river water by making dams. ex: High dam in Egypt. * Water from lakes rivers or ponds is not clean enough to drink, it contains dirt and germs.

* Dirty water from our homes and factories flow into the rivers. This makes the river water more dirty. * Drinking dirty water makes us ill. * Water has to be clean before it's supplied to our homes.

Revision * Put ( ✓ ) or (X) : - 1- Water comes only from rivers. ( )

( X )

2) we can drink dirty water. ( )

( x )

. 3) Water that looks clean will not have any germs. ( )

( x )

4) We can't store the river water. ( )

( X )

5) Only Plants need water. ( )

( x )

6) We can't live without water. ( )

( ✓ )

Thank you