Study the image about geologic time. a geochronological scale measured in millions of years ago or m y a. cenozoic era: paleogene period, 66 to 23 m y a, diatrima, many types of mammals, smilodon. neogene period, 23 to 2.6 m y a, smilodon, mammoth. quaternary period, 2.6 to today, human, mammoth. during which period did humans first appear on earth? quaternary neogene paleogene cenozoic

What is found within a ranger tower overlooking a drained lake

Technology has affected regional settlement patterns in what ways? choose all that apply. climatic improvement strategies have improved crop productivity. mechanized agricultural methods have improved agricultural productivity. participation in the global economy has increased urbanization. population shifts from urban to rural areas has increased as a result of petroleum production. settlement areas have increased as a result of improved water storage and delivery systems.

What term describes the government positions that officials who passed the civil service exam became a part of?