Human EVOLUTION

Separation

Darwin's Theory

Groups

Human like traits

Homo

Early Hominis

Australopithecines

Human Evolution

2 million years agoHomo habilis, homo erectus, homo neanderthalensisLarge craneal capacityDevelopment of sophisticated toolsControl fireLeft Africa and spread

Homo

Early hominisAustralopithecinesHomo

Separation

Human specie separated from chimpanzees 7.1 million years ago

Separation

In the theory of natural selection, organisms produce more offspring than are able to survive in their environment. Those that are better physically equipped to survive, grow to maturity, and reproduce. Those that are lacking in such fitness, on the other hand, either do not reach an age when they can reproduce or produce fewer offspring than their counterparts. Natural selection is sometimes summed up as “survival of the fittest” because the “fittest” organisms—those most suited to their environment—are the ones that reproduce most successfully, and are most likely to pass on their traits to the next generation.This means that if an environment changes, the traits that enhance survival in that environment will also gradually change, or evolve. Natural selection was such a powerful idea in explaining the evolution of life that it became established as a scientific theory. Biologists have since observed numerous examples of natural selection influencing evolution. Today, it is known to be just one of several mechanisms by which life evolves. For example, a phenomenon known as genetic drift can also cause species to evolve. In genetic drift, some organisms—purely by chance—produce more offspring than would be expected. Those organisms are not necessarily the fittest of their species, but it is their genes that get passed on to the next generation.Source:https://education.nationalgeographic.org/resource/theory-of-evolution/

Natural Selection

Human

Small teethBipedalityTool useLarge brain

4.4- 1.4 millions of yearsApe-like traitsChanges in skull, spine and legs that led to bipedal locomotion.Keep adaptations for tree climbingLong jawSimple tools

Australopithecines

7 - 4.4 million years agoSmall craneal capacity Ape-like traits

Early Hominis