Hunter-gatheres' skeletons tend to show higher levels of activity. As towns and cities began to compete for increasingly limited resources: organized warfare developed.
A traditional hunter-gatherer or forager is a person who leads an ancestrally derived lifestyle in which most or all food is obtained through foraging, which is the act of gathering food from local sources, especially edible wild plants, but also insects, fungi, honey, or anything safe to eat, and/or by hunting game (pursuing and/or trapping and killing wild animals, including catching fish), roughly as do most animal omnivores. The boundaries between the two ways of life are not entirely different, but hunter-gatherer communities' contrast with the more sedentary agricultural societies that rely primarily on planting crops and rearing domesticated animals for food production.
At least 90% of human history can be attributed to hunting and gathering, which was humanity's first and longest-lasting effective competitive adaptation in the natural world.
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