It is the another range formed by the natural process of the earth surface. After a thousand years, slowly the hills and plateaus turn into a plain land and sea also started to fill by the some debris at the end of Pleistocene period which converts into plain terai. This is how the single country Nepal was formed.
The advantage of a federal government would be It Allows local states to be independent and has an autonomy toward their territories, while providing opportunities for the central government to intervene.
The disadvantage would be there would be less uniformity between people on different states in response to the issues that the country face.
Answer: Genetic Drift
Explanation: Genetic drift is an evolutionary mechanism whereby gene or allele frequency of a particular population change over generations due to random chance. The effect of genetic drift is most visible in small population due to reduction in population size resulting from natural disaster or splitting of a small group from the main population to formation a colony. However, it can occur in large population as well but it's effect is as strong as that occurring within a small population.
The genetic drift among the Dunkers could be attributed to the official split between conservatives and progressives members in 1882.
The differences between physiological<span> and </span>psychological needs<span> are that </span>physiological needs<span> deal primarily with basic external </span>needs<span> for the care and maintenance of the human body. ... These </span>physiological needs<span> include simple basic </span>needs<span> such as nourishing food, clean water, shelter, and clean air.</span>