Chapter 16: Water - A Precious Resource (Worksheet)
Class 7 - Science
Fill in the blanks with suitable words.
1. __________ is celebrated as the world water day.
2. _______ of the earth’s surface is covered with water.
3. _____ and _______ water is highly salty and hence unfit for drinking.
4. Most of the freshwater is frozen in the __________ and in the polar ice caps and is thus not readily available.