sweat - Thousands of sweat glands under our skin release tiny drops of salty water, which then evaporate to cool our bodies., bipedalism - The ability to move on two feet, possibly to run fast and have free hands to use tools and weapons., opposable thumbs - The ability to wiggle and spread out, and touch all the fingers., communication - The ability to talk, hear and understand speech., strong teeth - Our early ancestors developed strong jaws and teeth to eat meat, fruit and raw vegetables. Ironically, as the human diet is changing our mouths are becoming smaller and our teeth weaker.,

Human Adaptation

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