Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere?
A.Carbon dioxide
B.Chlorofluorocarbons
C.Nitrogen oxide
D.Methane
A.Carbon dioxide
B.Chlorofluorocarbons
C.Nitrogen oxide
D.Methane
A.Place of prayer for Negro
B.Birds of Indonesia
C.Temperate grasslands of North America
D.Hot winds blowing in America
A.Singapore
B.Kuala Lumpur
C.Manila
D.Mala
A.Bhutan
B.Bangladesh
C.Sri Lanka
D.Nepal
A.Pacific Ocean
B.Indian Ocean
C.Caribbean Sea
D.Mediterranean Sea
A.India
B.Brazil
C.Malaysia
D.Sri Lanka
A.Russia
B.Africa
C.South America
D.Australia
A.6.3
B.17.3
C.5
D.18:30
A.Karachi
B.Lahore
C.Islamabad
D.Kahuta
A.China
B.Columbia
C.Brazil
D.India