Question

Match the following and choose the correct answer .
      A                                                                          B
1.Stratosphere                       a) Reflection of radio waves back to the earth
2.Troposphere                       b)Flying of jet aircrafts.    
3.Mesosphere                        c)Burning of meteoroids
4.Thermosphere                     d)75%of total gaseous mass of the atmosphere
                                                            is present       ​

Answer 1

Answer:

I don't know but mark as brainlist

Answer 2

Answer:

1-a ,2-b ,3-d ,4-c. . that is true answer