8th Class Science Sample Paper Science Sample Paper-9

  • question_answer
    What will happen if :                                                                                                                  
    (i) we go on cutting trees?
    (ii) the habitat of an animals is disturbed?
    (iii) the top layer of soil is exposed?


    (i) If we go on cutting trees, we will face the problem of food, wood, shelter etc. Also, the cutting of trees leads to the decrease in level of oxygen and also causes global warming.                        
    (ii) If the habitat of an animal is disturbed, the animal will face extinction and survival becomes very difficult for it
    (iii) The exposed layer has less humus and is less fertile. Gradually the fertile land gets converted into deserts. It is called deforestation.         


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