UPSC Ecology And Environment Environmental Issue And Environmental Pollution Question Bank Environmental Issues

  • question_answer
    Global climate change threatens coral reefs by
    1. increasing the temperature
    2. decreasing the temperature
    3. increasing the pH of the oceans
    4. decreasing the pH of the oceans
    Which of the above is/are correct?

    A)  1 and 2           

    B)  2 and 3

    C)  1 and 4           

    D)  2 and 4

    Correct Answer: C

    Solution :

    Global climate change threatens coral reef by increasing the temperature and decreasing the ph level of the ocean. Much of the carbon dioxide that enters the atmosphere dissolves into the ocean. In fact, the oceans have absorbed about 1/3 of the carbon dioxide produced from human activities since 1800 and about 1/2 of the carbon dioxide produced by burning fossil fuels (Sabine et al. 2004). As carbon dioxide in the ocean increases, ocean pH decreases or becomes more acidic.


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