Essay On Human Adaptation

LITERATURE REVIEW

"We humans have a sense of history. We cope with the present, wonder about our past beimg and origins, and attempt to forecast the future. We are a product of evolution, the ultimate in games of chance." - Sherman and Sherman. Before the seventeenth century, most people thought that the different species of organisms were fixed and were never to change. But then, there were explanations needed to account for the existence of unearthed fossils, especially of dinosaurs. People at that time also inquired about plant and animal diversities, extinction, and changes in structures over time. Adaptation is any kind of inherited trait that improves an organisms chances of survival and reproduction. It is a process of becoming better

Scientists have gathered enough evidences to show that living organisms today have been produced by a long processes of change over time. Thus, the emergence of man from his primate antecedents represents only one special offshoot of a many branched and continuous sequence going back to the beginning of life itself. Adaptation is the only thing we can do in order to survive, in order to become globally aware about the things that was happening in our environment. Some humans genetic adaptations body form adapted to climate as in animals, tropical people tall and lean to lose heat, arctic mountain people short and wide to conserve heat. All the changes that have transformed life on Earth, from it 's earliest beginnings to the diversity that characterizes it today, is what we call evolution. Pale skin adapted to vitamin D photosynthesis in dim climates Peruvian Highlanders First modern humans. Many gene culture co adaptations disease resistance genes, malaria, plague-dief related genes, adult lactose absorption and dairying alcohol metabolism and grains and grapes for alcoholic beverages. The process by which modern organisms or new species originated from ancient organisms or preexisting species also called