The first hunters gather

What is the meaning of strait

an narrow passage way of water

what is the meaning of glacier

A glacier is a large, perennial accumulation of crystalline ice, snow, rock, sediment, and often liquid water that originates on land and moves down slope under the influence of its own weight and gravity.

what is the meaning of artifact

something observed in a scientific investigation or experiment that is not naturally present but occurs as a result of the preparative or investigative procedure.

"widespread tissue infection may be a technical artifact"

what is the meaning of archaeologist

a person who studies human history and prehistory through the excavation of sites and the analysis of artifacts and other physical remains.

"Chinese archaeologists uncovered life-sized terracotta statues"