Big Idea
What helped humans stay in one place?
Agriculture
A genetic code found in cells that makes everyone unique
DNA
What happened to the dinosaurs?
Extinction
A group of people sharing similar beliefs and behavior
Culture
Early humans left Africa and moved throughout the ____.
world
New inventions made better tools and _______.
weapons
The time before writing was invented
Prehistory
What does BCE mean?
Before the Common Era
An extinct human-like species.
Neanderthals
Growing plants and raising animals for food.
Agriculture
4 civilizations arose in _____ valleys thanks to the fertile soil.
river
Something left over, like grain after a harvest
Surplus
Mammals
A ranking of people in a society based upon their role, wealth, or job
Social Class
A city and surrounding territories governed as one state
City-State
_____ made early humans' lives easier.
Tools
The remains of living things from long ago
Fossil
A long period of very cold climates.
Ice Age
Early humans survived by hunting and ______ their food.
gathering
Egyptian rulers were called ______.
Pharaohs
The creation of ______ helped early civilizations succeed.
writing
A silver metal stronger than bronze
Iron
_____ was used to make better tools.
Bronze
People who moved from place to place
Nomads
Agriculture started in this Middle East area.
Mesopotamia