Which of the following statements is NOT true?

• As a result of depletion of ozone layer, less UV radiation reaches the earth due to which all the essential nutrients required for life sustenance are missed out.
• Ozone layer depletion results in skin cancer in human beings.
• The "UN protocol" was designed to protect the ozone layer by stressing ban on the use of ozone depleting chemicals.

1 and 3

The correct answer is Option 3:1 and 3

Statement 1 is not true because the depletion of the ozone layer actually results in more UV radiation reaching the Earth, not less. This increased UV radiation can harm living organisms and disrupt essential nutrients and processes.

Statement 2 is true as ozone layer depletion can indeed lead to increased incidence of skin cancer due to higher UV radiation.

Statement 3 is Not true; the "Montreal Protocol" (not UN Protocol) was designed to protect the ozone layer by phasing out the use of ozone-depleting substances.