Earth Science

Human Impacts on the Earth’s Environment

Growth of Human Populations

Study Tip
Advances in sanitation and technology were responsible for the rapid rate of growth in the human population

The Rate of Growth

  • Although the population continues to grow rapidly, the rate of increase in growth has declined over the past few years
  • The rate of growth of a population is determined by the natality (birth rate) and the mortality (death rate).
  • A high rate of growth can be attributed to lower mortality rates in developed nations.
  • Limiting factors such as the amount of space, pollution, and resources can determine the maximum population of a region.
Study Tip
Advances in sanitation and technology were responsible for the rapid rate of growth in the human population
Human Populations
Although the world’s population continues to grow, it is increasing at a decreasing rate.
Concept Check
  • How does the Earth’s population increase or decrease?
  • Why do you think that the rate of the increase of population skyrocketed during the 19th and 20th centuries?
  • Is the growth of the human population a good thing? What positive and negative effects come from it?