Which of the following statements about human populations is true?
A) There are an estimated 6.8 billion people on Earth, evenly spread across the globe. B) Asia and the Near East have the highest density of people and the highest rates of population growth. C) Over half of the world's population lives on the continent of Africa. D) North America and Western Europe have almost the same population density and growth rate. E) Asia has the largest population size and the highest density of people.