The United States rocks and Brazil don’t
Answer:
The Africa<em> </em><em>is</em><em> </em><em>the</em><em> </em><em>answer</em><em> </em><em>(</em><em>b</em><em>)</em>
California, New Mexico, Texas, and Arizona all border Mexico!
A depression in the ground due to a cave collapse or acidic water dissolution of limestone is called a B)sinkhole. The collapse has usually happened on the surface layer of the ground. There are many notable examples of sinkholes which can be found around the world, which have become touristic sites. Sinkholes can be caused because of both natural and artificial processes.
