12th Class Biology Sample Paper Biology - Sample Paper-14

  • question_answer
    Akshay was concerned about the pollution being made by the unnecessary horns of buses, cars and other vehicles in the residential area. He alongwith his friends decided to make their area a 'no noise zone'. For this, they met the senior authorities, traffic police and municipal corporation and put forth the issue in front of them.
    (i) Discuss the major causes and effects of noise pollution.
    (ii) Which values have been shown by Akshay and his friends?

    Answer:

    (i) Main sources of noise pollution are
    (a) Various industries such as textile mills, printing presses, engineering establishments, etc.
    (b) Public address systems like loudspeakers.
    (c) Transport vehicles like scooters, motor-cycles, car, buses, trucks, trains, jet planes, etc.
    Harmful effects of noise pollution are
    (a) Sleeplessness and stress.
    (b) Increased heartbeat and breathing problems.
    (c) Damage to ear drums and impaired hearing ability.
    (ii) Akshay and his friends show alertness, awareness, responsibility and firmness in tackling a problem.
    They express boldness towards environment consciousness.


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