2. Questions Bank
  3. 9th Class
  4. Science
  5. Natural resources

9th Class Science Natural resources Question Bank Natural Resources

  • question_answer
    Which of the following are negative effects on the environment from the excessive use of fertilisers in a farm situated near a lake?

    A) Decreased oxygen content in the water

    B) Decreased light penetration in the water

    C) Decreased population of aquatic organisms

    D) All of these  

    Correct Answer: D

    Solution :

    Eutrophication occurs. The algae use up the oxygen present in water, causing the death of fish and other aquatic organisms.


You need to login to perform this action.
You will be redirected in 3 sec spinner