Which statement best describes a polygon?
a).a closed plane figure with three or more sides that are straight
b).a closed plane figure with four or more sides
c).an open or closed plane figure
d).an open or closed plane figure with three or more sides

What term is given to the border between the central alps and the southern limestone alps?

Which statement best explains distribution of natural resources? people tend to settle in locations that have the resources they need for survival. some countries have resources that others lack, so trade between countries becomes vital. fossil fuels come from areas that have mountains and other areas that manufacture synthetic gas. areas with natural resources provide a higher standard of living and better quality of life.

What are sedimentary rocks that form from evaporating sea water called? a) chemical b) fossiliferous c) organic d) clastic