CBSE 12th Standard Biology Subject Biodiversity and Conservation HOT Questions 3 Marks Questions With Solution 2021
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CBSE 12th Standard Biology Subject Biodiversity and Conservation HOT Questions 3 Marks Questions With Solution 2021
12th Standard CBSE
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Reg.No. :
Biology
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What would be the impact on the environment around a thermal power plant if its electrostatic precipitator stops functioning? Give a reason.
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(a) Why are people living in West Bengal prove to Black foot disease?
(b) What is blue baby syndrome? Explain. -
The figure is given shows relative contributions of various greenhouse gasses to the total global warming.
(i) Name the gasses (a) and (b) -
The graph below represents the growth patterns of types of aquatic organisms over a brief period of time in a water body surrounded by an agricultural land extensively supplied with fertilizers. Identify what would represent(i) A and (ii) B.
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Since the origin of life on earth and evolution there have been 5 episodes of mass extinction, but the current rate of extinction is 100-1000 times. What are the main causes of high extinction rate and how is it going to harm human beings?
3 Marks
