Analyses the reason for recurrent dust storms in the great plains of America.

The reason for recurrent dust storms in the great plains of America were as mentioned blew:
(i) The early 1930s were years of persistent drought.
(ii) The rains failed year after year, and temperatures soared. The wind blew with
ferocious speed.
(iii) Ordinary dust storms became black blizzards only because the entire landscape has been ploughed over, stripped of all grass that held it together.
(iv) Zealous farmers had recklessly uprooted all vegetation, and tractors had turned the soil over, and broken the sod into dust. The whole region had become a dust bowl.