<P> A hunter - gatherer is a human living in a society in which most or all food is obtained by foraging (collecting wild plants and pursuing wild animals), in contrast to agricultural societies, which rely mainly on domesticated species . </P> <P> Hunting and gathering was humanity's first and most successful adaptation, occupying at least 90 percent of human history . Following the invention of agriculture, hunter - gatherers who did not change have been displaced or conquered by farming or pastoralist groups in most parts of the world . </P>

What did hunter gatherers do to sustain themselves