Digging up plants
Making and repairing tools.
Protecting flocks and herds.
Finding secure places to rest.
In cold climates.
In permanent dwellings.
Without a spoken language.
Migrated from Africa
Harvesting farmed crops.
Clearing land for farming.
Destroying farmland through carelessness.
Competing with others for available land.
Humans were safer during a hunt.
Were able to hunt more efficiently.
Could use animals to pull carts and wagons.
Had a ready supply of meat and animal products.