This lesson is about changes in peoples' jaws snd teeth, what factors affected it and so on

Name three factors that influenced the change in the jaw and teeth

Travel back to a time when pearly whites and jaws had to chew, chew, chew so that foods were digestible, then compare that time with contemporary eating habits that often include softer, processed foods. Do our jaws and teeth work as hard as our ancestors’ did?

Why Early Human Have Straight Teeth Without Orthodontics

why-early-human-have-straight-teeth-without-orthodontics

Let's do English ESL general vocabulary practice. This lesson is about changes in peoples' jaws snd teeth, what factors affected it and so on