| 3. | Human modifications of the physical environment in one place often lead to changes in other places (e.g., construction of a dam provides downstream flood control, construction of a city by-pass reduces commercial activity in the city center, implementation of dry farming techniques in a region leads to new transportation links and hubs). |
| 4. | Human societies use a variety of strategies to adapt to the opportunities and constraints presented by the physical environment (e.g., farming in flood plains and terraced farming, building hydroelectric plants by waterfalls and constructing hydroelectric dams, using solar panels as heat source and using extra insulation to retain heat). |
| 5. | Physical processes influence the formation and distribution of renewable, nonrenewable, and flow resources (e.g., tectonic activity plays a role in the formation and location of fossil fuels, erosion plays a role in the formation of sedimentary rocks, rainfall patterns affect regional drainage patterns). |
| 6. | There are costs and benefits of using renewable, nonrenewable, and flow resources (e.g., availability, sustainability, environmental impact, expense). |
| 7. | Human interaction with the environment is affected by cultural characteristics (e.g., plowing with oxen or with tractors, development of water resources for industry or recreation, resource conservation or development). |