Which one of the following statements is incorrect in the case of the Bhopal tragedy?

$Ahmed \text{ } Khan : \text{polyblend} :: \text{Amrita Devi Bishnoi} :$

Read the following statements carefully and select the correct ones.
$I.$ $UV$ rays are essential for the production as well as degradation of ozone gas.
$II.$ Ozone present in the ionosphere acts as a shield absorbing $UV$ radiation coming from the sun.
$III.$ One-fourth of the incoming solar radiation is reflected by the atmospheric gases and clouds,and only half of the incoming solar radiation falls on the earth's surface,heating it. Of this,only a small portion is reflected back.

All statements regarding $BOD$ (Biochemical Oxygen Demand) are correct,except:

Chipko movement was launched for the protection of

Estuaries occur in which of the following Indian states?