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I have learnt that
 the Earth was formed around 4.5 billion years ago.
 we share our Earth with plants, animals, birds, trees and other

living things.
 sandy, dry lands are called deserts.
 the low areas of land between hills and mountains are called

valley.
 recycle as much as possible.

Test Yourself

How should we treat our Earth? Write some points.
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________.

Exercise (Summa ve Assessment)

A. Mul ple Choice Ques ons. (MCQs)
Tick () the correct op on.
1. The Earth formed around _________ billion years ago.

(a) 4.5 (b) 3.5

2. The large areas of flat lands are called _____________.

(a) plains (b) desert

3. The high areas of lands are called ___________.

(a) hills (b) valley

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