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Eating agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime and food processing agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime from two million years agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime helped us to develop language. Researchers say agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime cutting up meat was a agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime step in our agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime. We needed agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime time for chewing, which gave us more time to develop language and communicate. Cutting up food saved agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime humans as many as 2.5 million agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime per year. In contrast, chimpanzees spend half their day chewing. This means they have less agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime to communicate.

Researchers also say the agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime of our face changed. Our jaws and teeth became agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime. A professor said: "We went from having…big agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime…to having smaller teeth." He said this, "allowed for the agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime for speech and other agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime in the head, like bigger agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime." The professor chewed raw meat to test his agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime. He said: "You chew and you chew and you chew, and agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime happens." He said that slicing meat, "is the agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime technology of agoallbrainschewscrucialearlyevolutionhabitslessnothingselectionshapeshiftssimplestskillssmallerteeththattheorytime".