Humans evolved from an ape. Based on the difference we have when compared to an ape, we can tell what adaptations we have had that are different from those of ape.
The most obvious difference is our bipedalism, as we walk on 2 legs instead of 4. There is no scientific consensus as to why we evolved to walk on 2...
Best answer: Humans evolved from an ape. Based on the difference we have when compared to an ape, we can tell what adaptations we have had that are different from those of ape.
The most obvious difference is our bipedalism, as we walk on 2 legs instead of 4. There is no scientific consensus as to why we evolved to walk on 2 legs even though we are slower when we run as a result. Even an average chimpanzee can run faster than Usain Bolt (the world record holder for 100 meter dash) for example. Bipedalism frees our hands to carry things, including a stick or branch to defend ourselves, and people living close to wilderness areas do still carry sticks to defend themselves against wild animals. Walking on 2 legs also allows us to see farther, without stopping to stand on 2 leg to look around, the way that a bear or squirrel may do. So we see approaching danger from a longer distance, especially in places where there are tall grasses (e.g. in the African savanna where humans evolved) and we can be better prepared for it when it comes or try to find hiding places before they can get close enough.
Another difference is our almond shaped eyes, which gives us greater peripheral vision. We can in fact see slightly behind us. Apes, OTOH, have round eyes, and they have less peripheral vision. They do not need good peripheral vision because they live in forests, which are much safer, since the only predator there is the leopard. Other differences include a lot less hair, a lot more sweat glands, and more hair on the top of the head. These differences are related to temperature regulation, because the savanna is a lot hotter, with less shade. Therefore our body evolved to stay cool.
We also evolved to be able to walk or jog long distances because we are hunters. We do not have good speed or sharp teeth and claws to kill prey. Instead we hunt by following prey and inducing them to run repeatedly until they become overheated and exhausted. When our prey can no longer run, we close in and make the kill using bows and arrows. Our hands evolved to allow us to make these weapons. Our hands are able to move more flexibly than ape hands. Having the hands to build tools is not enough, as we need to know how to build them. We evolved a big brain to allow us to find food in the African savanna, and our brains allowed us to invent bows and arrows and spears and to make them. Apes do not have the intelligence or the hands needed to invent bows and arrows.
Other differences, such as our eyebrows, can keep rain from getting into our eyes, so we can still see when we are dancing in the rain. Because of our intelligence, we have invented raincoats and umbrellas so that we don't get as wet when we do dance in the rain. While we are dancing to music, we can also sing. Our voices have evolved to allow us to communicate, and sometimes what we know can be transmitted to people we have never met and will never meet. We can tell each other stories for example, to people thousands of miles away and to those who will live thousands of years after we do by passing along information using speech. Speech also has uses while we are still alive, and we can learn or we can teach by speaking. We can sit in a classroom and learn a lot of things just by hearing the teacher talk, for example. Apes cannot do that. They have to watch other apes do things and learn.
6 days ago