Gathering information from a distance - shrew images sound waves radiate it will waves Etc - is called

Master planned communities outside of chicago. note: population density means people living in an area per square mile. chicago, an urban and highly populated area has a much more higher density than a desert, amish community, settlement, or nomadic region.

Ithink it is space that makes up 70 percent

The answer is b im not sure 

Answer// dinosaurs emerged during mesozoic era;