Sentences with phrase «because nomadic hunter»

Partly, too, it's because nomadic hunter - gatherers have to keep their children spaced at four - year intervals by infanticide and other means, since a mother must carry her toddler until it's old enough to keep up with the adults.

Not exact matches

These examples are crucial, Fry says, because our ancestors are thought to have lived as nomadic hunter - gatherers from the emergence of the Homo lineage just over 2 million years ago in Africa until the appearance of agriculture and permanent settlements about 12,000 years ago.

That's because the dog is the only animal to undergo the process when humans were still nomadic hunter - gatherers.