Why do apes become people?

In order to adapt to the new environment, the ancient ape had to start walking on two feet, but basically maintained the habit of arboreal. Australopithecus has not changed most of the characteristics of its ancestors, such as small size, obvious sexual dimorphism (males are 50% larger than females on average), small brain, long arms and short legs. Then it experienced four stages: ape-man, primitive man, homo sapiens and modern man.

About 65 million years ago, a large meteorite with a width of about 16 km hit Mexico's Yucatan Peninsula, causing a disaster. Two-thirds of the animal species on the earth, including dinosaurs, went extinct (the reason for the extinction of dinosaurs is uncertain, but only part of it), and the golden age of reptiles ended. Primitive mammals survived the disaster for a long time, and then quickly evolved into humans.

Extended data:

Australopithecus first appeared in southern and eastern Africa. They evolved from primitive apes and differentiated into lower apes (such as gibbons), higher apes (such as orangutans) and ancient apes.

In anthropology, the first person is called a "fully formed person". Paleoanthropologists in China divide this process into two stages: ape-man and homo sapiens, and each stage is divided into early and late stages.

With the development of archaeology, prehistoric civilization was gradually denied. Archaeology has discovered most of the evolved ancient ape fossils. With the discovery of modern biology, people found that genetic dna has evolved, which confirmed the truth of neutral evolution theory.

Baidu Encyclopedia-History of Human Evolution

Baidu Encyclopedia-Human Evolution