This group of historians and history teachers convened in 2006â2007 to review. the AP U.S. History course and provided recommendations to ensure that the. historical thinking skills, themes, and scope of the course are aligned with the. expectations of college and university survey courses.
Climate change can also be caused by human activities, such as the burning of fossil fuels and the conversion of land for forestry and agriculture. Since the beginning of the Industrial Revolution, these human influences on the climate system have increased substantially.
Natural Causes of Climate Change. Milankovitch cycles over the past 1 000 000 years. Source: Global Warming Art. The Milankovitch Theory explains the 3 cyclical changes in Earthâs orbit and tilt that cause the climate fluctuations that occur over tens of thousands of years to hundreds of thousands of years.