Consider following statements:
(a) Chlorofluorocarbons are responsible for ozone layer depletion.
(b) Green house effect is responsible for global warming.
(c) Ozone layer does not permit infrared radiation from sun to reach the earth.
(d) Acid rain is mostly because of oxides of nitrogen and sulphur.
Correct statements are:
1
(a), (b) and (c)
2
(b), (c) and (d)
3
(a), (c) and (d)
4
(a), (b) and (d)