4. Which of the following presents an analysis of how people in a given region have adapted to their physical environment? a. People from the frozen tundra regions of Russia & Canada grow grain crops using irrigation & windmills to pump water.
b. Due to a lack of water for drinking, people in SW Asia have developed methods of desalination of seawater as a fresh water source.
c. People in N. Africa often construct houses of wood, stone, & brick as a way to use building materials that naturally occur in their environment.
d. People in North America have created dams to generate electricity for nearby cities.