6th Class Social Science Sample Paper Social Science Sample Paper-7

  • question_answer           Why is the earth called a unique planet?   

    Answer:

    Earth is called a unique planet because:
    (i) Conditions which are favourable to support life are only found on the earth. It is neither too hot nor too cold.
    (ii) It has water and air, which are essential for our survival.
    (iii) The air has life supporting gases like oxygen.               


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