Scopettes Comfort Tip Applicators; Safe, highly absorbent, uniform and lint free; ob/gyn/throat and exam room swabs; latex free; Available with non-sized tips or sterile; proudly made in the USA Sales & Service: Call 425.222.5963
Extensive farming combined with severe drought caused the Dust Bowl in the 1930s. Deep plowing on the Great Plains killed the natural grasses that kept soil in place, and the topsoil turned to dust and blew away.
On the Cause of the 1930s Dust Bowl. 1  1 Earth Sciences Directorate, National Aeronautics and Space Administration/Goddard Space Flight Center, Greenbelt, Maryland 20771, USA.  2 Science Applications International Corporation, Beltsville, Maryland 20705, USA.