the first feature that all civilizations have in common is that they all form around rivers
the first feature that all civilizations have in common is that they all form around rivers
they all have a nucleus
foot
they are slick slop and slimy
highly visable
They all breathe air.
they have either choclate,cream or milk in or on them.
Inca
None of the inner planets have rings.
culture
rapidly growing populations
asymptote