climate
an area’s average weather conditions over a long span of time
surplus
extra supply
prehistory
a long period of time before people developed systems of writing and written language
glacier
a huge sheet of ice covering a great stretch of land
archaeology
the study of the ways of past cultures through objects they left behind
harvest
to gather
carbon dating
a method scientists use to estimate the age of living things after they have died
geography
the study of the relationship between physical features, climate, and people
archaeologist
one who carefully uncovers evidence from the past
nomad
a person who travels from place to place
artifact
an object made by people long ago
technology
way in which humans produce the items they use
excavation site
place where archaeologists dig up artifacts
culture
the technology, customs, beliefs, and art of a group of people
migrate
to move from one area to another
domesticate
to tame wild animals or plants
landform
a surface feature such as a valley, plain, hill, or mountain