Dating human past culturally in ppt

However, some people find the concept of human evolution troubling because it can seem not to fit with religious and other traditional beliefs about how people, other living things, and the world came to be.Nevertheless, many people have come to reconcile their beliefs with the scientific evidence.The process of evolution involves a series of natural changes that cause species (populations of different organisms) to arise, adapt to the environment, and become extinct.All species or organisms have originated through the process of biological evolution.Paleoanthropology is the scientific study of human evolution.Paleoanthropology is a subfield of anthropology, the study of human culture, society, and biology.One of the earliest defining human traits, bipedalism -- the ability to walk on two legs -- evolved over 4 million years ago.Other important human characteristics -- such as a large and complex brain, the ability to make and use tools, and the capacity for language -- developed more recently.

By studying this type of evidence, archeologists can understand how early humans made and used tools and lived in their environments.Usually, the remains were buried and preserved naturally.They are then found either on the surface (exposed by rain, rivers, and wind erosion) or by digging in the ground.Human evolution is the lengthy process of change by which people originated from apelike ancestors.

Scientific evidence shows that the physical and behavioral traits shared by all people originated from apelike ancestors and evolved over a period of approximately six million years.

Scientists do not all agree, however, about how these species are related or which ones simply died out.

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