Chapter 5: Time, Continuity, and Change
Population, Urbanization, Pollution, and Global Warming
This chapter focuses on how people's activities have changed over time, and how these changes affect the environments where we live. It focuses on the Industrial Revolution, and the changes this continues to cause. This chapter is closely related to Chapter 5 of the Science book: Science in Personal and Social Perspectives. You will find more information on these subjects under the Science tab for that chapter.
Effects of Urbanization on Stream Ecosystems
Part 1 of an investigation of the impacts of urbanization on the surrounding environment. Watch Parts 2 & 3 for more details on the results and scientific method.
Urbanization and Air Pollution
A graph showing the connection between urbanization (the growth of cities) and increased air pollution from the Industrial Revolution (1870) to the 21st Century.
Crop Irrigation and its Environmental Impact on the Aral Sea
An article, including a series of pictures and charts showing the effects of diverting water from rivers feeding the Aral Sea to meet increased demand for food production due to population growth from the United Nations Environmental Programme (UNEP).
Global Warming Timeline
An interactive timeline showing climate change from 4 billion years ago to the present day.