Population & Human Origin
Population & Human Origin

Human Population & Origins – Population is a generalization area consisting of objects or subjects that have certain qualities and characteristics determined by the researcher to be studied and then draw conclusions.

In the 200 years from 1800 to 2000, the world’s population has grown rapidly from one to six billion. It is estimated to peak at about ten billion during the 21st century. As of 2004, a sizable minority — about 2.5 of the 6.3 billion people — lived around urban areas. Urbanization is expected to soar dramatically during the 21st century. Pollution, crime and poverty are just a few examples of the problems faced by people living in cities and suburban settlements.

Origin

Animals closest to man the survivors are the chimpanzees; the second closest is the gorilla and the third is the orangutan. It is important to remember, however, that humans only share a common ancestral population with these animals, and are not descended directly from them. Biologists have compared sequences of DNA base pairs between humans and chimpanzees, and estimate an overall genetic difference of less than 5%. [2]. It has been estimated that the human lineage diverged from chimpanzees about 5 million years ago, and from gorillas about 8 million years ago. However, recent news reports of hominid skulls dating to about 7 million years have shown diverging from the ape lineage, making strong the idea of ​​an early branching of the lineage.
Here are some important phenomena in evolution man:
  • the expansion of the brain cavity and the brain itself, which is generally about 1,400 cm³ in volume, is twice that of chimpanzees and gorillas. Some anthropologists, however, say that instead of expanding the brain, the rearrangement of brain structure has more to do with increasing intelligence,
  • canine reduction,
  • bipedal drive (two legs),
  • repair of the larynx / larynx (which allows the production of complex sounds otherwise known as vocal language).

How these phenomena relate, in what way they have adapted, and what role they played in the evolution of complex social and cultural organizations, are important issues of debate among physical anthropologists today.

During the 1990s, variations in human mitochondrial DNA were recognized as a valuable resource for rebuilding the human lineage, and for tracking early human migration. Based on these calculations, the last modern human-like ancestor is thought to have lived about 150 millennia ago, and to have evolved outside Africa less than 100,000 years ago. Australia was explored relatively early, about 70,000 years ago, Europe +/- 40,000 years ago, and the first Americas were settled roughly 30,000 years ago, and the second colonization along the Pacific +/- 15,000 years ago (see Human migration).

Various religious groups have raised objections to the theory of human evolution from a common ancestor with other hominoids. As a result, there are various differences of opinion, squabbles, and controversies. Look at creation, evolutionary arguments, and clever design to see the opposite mindset.

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