Homo neanderthalensis, commonly known as Neanderthal, was a species of hominid that occurs in the fossil records around 430,000 years ago up until 40,000 years ago. This hominid lived in Europe, the Middle East, and the western half of Central Asia. The Neanderthal is a hominid that looks like a cross between the Homo sapiens and the Homo erectus. It is believed that this species of hominid was mostly carnivorous, and that the majority of the food came from hunting of animals, and much less from gathering plants. With the migration of the Homo sapiens into the territory of the Neanderthal though, its numbers started to quickly decline and it went extinct, but it left its DNA as the two species were interbreeding, so lot of people in Europe and Asia have a Neanderthal DNA, usually between 1 and 4%.
Her body compensate for imbalance by Kidney retain bicarbonate ions .An increase in hydrogen ion in the body causes the kidney excrete more acid.These lowers the PH of the blood since hydrogen ion are increased while bicarbonate ion are decreased