Which era was the longest period of human history?MicrolithicCopper AgePaleolithicNeolithic

What is the term which indicates to the old Stone Era was a period of human history up to 9000 B.C.E. when tools were made of stone and bone, and people gained their food through foraging?            Group of answer choicesMesolithic EraNeolithic EraHolocenePaleolithic Era

Which of the following best identifies the time period when humans over a fairly wide area began to cultivate plants and domesticate animals?NeolithicPaleolithicClassicalPrehistoric

Which era was the longest?

Match the era on the left with its characteristic on the right.PrecambrianCenozoicPaleozoicMesozoic?When Earth formed?The age of dinosaurs?When most of our limestone and coal formed?The era of humans

The time period of interest for understanding human history is called the Quaternary. It is made up of two epochs. What are they called?