1930 dust bowl in the great bowl was cause by

The dust bowl was caused by an over farming of soil and an intense drought. This in turn caused the soil to become very dry and sand like, which cause dust storms, which is how it got its name "The Dust Bowl"

Explanation:

You can look this up about anywhere really, but we just finished a section on the dust bowl in my history class.

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;