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The average weather conditions of a region for a long time (about 30 years) are called…
a) climate                                            
b) weather
c) monsoon                          
d) both a and b

a

Explanation: There are some factors which effect climate. 1) Distance from the equator 
2) Distance from the Sea 
3) Altitude from the sea level           
4)Direction of wind
5) Direction of mountain   
6) Ocean currents


UV rays is higher in summer as………………
a) during summer, ozone is more in the atmosphere
b) sun is busy in summer specially
c) sun is closer to planet earth so UV rays have a shorter distance to travel and reach us

d) none of the above

c

This is a major risk linked with extreme ultraviolet rays through the atmosphere as a result of ozone layer depletion
a) neurological disorder
b) digestive system gets damaged
c) increased liver cancer
d) increased skin cancer

d

Following form(s) of oxygen is/are involved in ozone-oxygen cycle
a) triatomic oxygen (O3)
b) diatomic oxygen (O2)
c) atomic oxygen (O)         
d) all of these

d

Main cause of ozone holes and its depletion is
a) propellants                
b) foam-blowing agents
c) halocarbon refrigerants                 
d) all of these

d

The movement of air over the surface of earth is called……….
a) air                      
b) Wind         
c) air pressure                      
d) none of these

b