The different stages of human life are fetus, infancy, childhood, adolescence, adulthood and old age. The human life cycle starts at fertilization, goes through the embryonic stage and the fetal stage. After fetal growth and birth, the second stage is infancy, which is the period between birth and one year.Know More
During infancy, a child learns to walk, eats solid food, and has some teeth. Childhood follows after infancy and is a period that last from the first year of life to about the age of 10. Between the ages of 11 and 13, a child can enter the pubescent stage and adolescence begins. This stage occurs typically between the ages of 10 and 19.
In adulthood, humans have a completely developed body. In their 20s, humans are at their peak. From the age of 30 to old age, the aging process begins and some noticeable signs are thinning skin, the appearance of wrinkles and muscle mass decreases.Learn more about Anthropology
According to an article published in The Independent, the San people are most likely the oldest human population group to inhabit Earth. The claim is based on an extensive analysis of African DNA in a study published in the journal Science.Full Answer >
Examples of the types of human adaptation include the development of legs and feet, lactose intolerance and skin pigmentation. Each of these adaptations manifested as a result of evolution.Full Answer >
Although in the United States people are often asked to self-identify as either white, Hispanic, African American, Asian or Native American, advanced understanding of DNA reduced the amount of races accepted by scientists to three: European, Asian, African. It is argued, however, that even these three races are not accurate classifications of individuals.Full Answer >
The expansion of the Roman Empire was from about 60 B.C. till the Empire's dissolution in 476 A.D., and many of the innovations that Romans brought to other countries were fueled in part by dwindling resources in the area of Rome itself. As the people of Rome used up firewood, and grains became scarcer due to a rising population, it was the human-environment interaction which led to the political and military decisions to conquer other lands.Full Answer >