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.
Another contributing cause of climate change is when agriculture alters the Earth's land cover, which can change its ability to absorb or reflect heat and light. Land use change such as deforestation and desertification, together with use of fossil fuels, are the major anthropogenic sources of carbon dioxide.