Explain the reason for having an equator and a prime meridian. how do these two lines us to navigate our world? describe your opinion in at least two to three sentences.

The Equator is important to navigation because on the southern side of the equator you cannot see the Northern Star,Prime meridians are used to see the axis rotation of the earth,hope this helps!

Argon, carbon-14, and carbon-12

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.