Where did humans come from?
May 28, 2017 10:54AM
Technically, we are from the middle of a star. In the heart of a star there is enough heat energy to make fusion occur (sticking subatomic particles together) , forming every element. When a star explodes (supernova) the elements are scattered. the gravity takes hold, creating the earth. Then evolution takes place and forms life and eventually us.
It is now generally accepted that man evolved from our predecessors over a period of several million years. Archaeologists have unearthed numerous remains of the early hominids who preceded us. Although, there are several gaps in the evolutionary chain that remain undiscovered.
The term "human", in the context of human evolution, refers to the genus Homo, but studies of human evolution usually include other hominins, such as the australopithecines. The Homo genus diverged from the australopithecines about 2 million years ago in Africa. Several species of Homo evolved, including Homo erectus, which spread to Asia, and Homo neanderthalensis, which spread to Europe. Homo sapiens evolved between 400,000 and 250,000 years ago. Most scientists favor the view that modern humans evolved in Africa and spread across the globe, replacing populations of H. erectus and Neanderthals. Others view modern humans as having evolved as a single, widespread population.
Humans (Homo sapiens) are the present representative of the genus Homo as it has evolved from earlier forms (Homo erectus,Homo habillis et al.)
Note I did not say we are the end of the evolutionary process, came from more primitive forms, the result or other terms to suggest we're the best or the final step.
Since our earliest ancestors we have been adapting to fill an ecological opportunity. This has led to us presently having larger brains, an erect posture, colour vision, an inability to create vitamin D, a vestigial appendix and many other characteristics.
We've beaten out competitors (e.g. Homo neanderthalensis), it is theorized that other species of Homo- were incorporated into the Homo sapiens species. At times we have been almost wiped out as a species, perhaps down to as few as 25,000 species representatives. Presently we are flourishing on every continent.
The vast majority of scientists are convinced by the evidence
supporting evolution, and that we evolved from an ape-like
ancestor. Our most recent common ancestor is with chimpanzees,
which is why humans DNA is 97% related to apes. Humans didn't
evolve from chimps, just apes that went on to become both
chimpanzees and us.
Humans developed in Central Africa. Monkeys lived on trees in forests and jungles, so they started to walk on 4 legs to pick food from the ground, and over time they began to walk on 2 legs. Homo sapiens spread all over the world except for North America and South America. Eventually humans crossed the Bering Land Bridge between Russia and Alaska, which is how the aboriginal people in North America and South America came to that part of the world.