Which one of the following is a wrong statment?

  • Option 1)

    Most of the forests have been lost in tropical areas.

  • Option 2)

    Ozone in upper part of atmosphere is harmful to animals.

  • Option 3)

    Greenhouse effect is a natural phenomenon.

  • Option 4)

    Eutrophication is a natural phenomenon in freshwater bodies.

 

Answers (1)

 

Ozone layer -

There is ‘good’ ozone also; this ozone is found in the upper part of the atmosphere called the stratosphere, and it acts as a shield absorbing ultraviolet radiation from the sun.

- wherein

UV rays are highly injurious to living organisms since DNA and proteins of living organisms preferentially absorb UV rays, and its high energy breaks the chemical bonds within these molecules.

 

 

 


Option 1)

Most of the forests have been lost in tropical areas.

This solution is incorrect.

Option 2)

Ozone in upper part of atmosphere is harmful to animals.

This solution is correct.

Option 3)

Greenhouse effect is a natural phenomenon.

This solution is incorrect.

Option 4)

Eutrophication is a natural phenomenon in freshwater bodies.

This solution is incorrect.

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