How do the Earth’s physical factors influence population density? When population growth increases in an area, what is happening to the birth rate and age structure of that population? (Site 1)

Answer 1

The Earth's physical factors have a significant impact on population density. For example, areas with fertile land, accessible water sources, and mild climates are typically more densely populated than areas with harsh climates, limited resources or rugged terrain. These factors influence the ability of an area to support human habitation and development.

As population growth increases in an area, the birth rate typically becomes higher as more people are having children. However, over time, the age structure of the population also changes. As the population becomes larger, the proportion of younger individuals relative to older individuals may decrease, resulting in a shift towards an aging population. This is because people are living longer due to improvements in healthcare and quality of life, but birth rates may not necessarily keep up with this increased longevity. Furthermore, population growth can lead to increased competition for resources and infrastructure, which can have an impact on the quality of life for individuals living in a densely populated area.