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The atmosphere can be divided into many layers based on the variation in………in each layer.
a) pressure                                            

b) volume
c) density                                              

d) temperature

d

The pressure of atmosphere at sea level is…
a) 2 atm                                

b) 3 atm
c) 1 atm                                

d) 0atm

c

The atmosphere is divided into ………zones.
a) 3        

b) 4                                        

c) 5        

d) 6

b

Troposphere:-


The first layer of atmosphere, which is closed to the surface of earth is called…………
a) thermosphere                  

b) mesosphere
c) stratosphere                                     

d) troposphere

d

Tropo means…………
a) changing                                          

b) turning
c) both a & b                                       

d) none of these

c