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At a particular site, there may be present several components, recognized by critical changes in the artifact assemblages.

A number of similar and contemporary components make up a phase..

The carbon-14 it contained at the time of death decays over a long period of time.

By measuring the amount of carbon-14 left in dead organic material the approximate time since it died can be worked out.

Wallacean islands are interesting because they have rarely, if ever, been connected via land bridges to either the Asian continent to the west or the Greater Australian continent to the east.

There is a greater part of man’s unwritten past that archaeology has managed to unravel.

Studying the material remains of past human life and activities may not seem important or exciting to the average Joe unlike the biological sciences.

There's a small amount of radioactive carbon-14 in all living organisms.

When they die no new carbon-14 is taken in by the dead organism.

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