Answer:
From what I know the first solution is the answer
They are giving credit to where ever they got their information.
With the information given, I would say it is 0.8.
Answer:
The Dust Bowl was a time in the 1930's when a severe wave of droughts and failure to use dryland farming methods that damaged the land and Economy. Many people starved without food and dust piled up everywhere.
Explanation:
Hope this helps