Class 3 – Social Science
    About Lesson

    Page number 125 and 126 – Answers 

    A. 1. Environment   2. Exhaust fumes  3. Waste materials   4. Van Mahotsav  5. Plants 

    B. 1. false  – we need clean environment for our survival.   2. True   3. False  – medicines sprayed by farmers get washed into rivers and causes water pollution.  4. True   5. False  – all of us should work to keep the environment clean. 

    C. Carbon dioxide  2. Helps 3. Is bad for people and water animals. 4. Provide shelter for insects and animals.  5. Sundarbans.

    D.    1 – d     2 – c      3 – a      4 – b

                ÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷