Living things affect the physical characteristics of their regions.
Humans and beavers both build dams, which affect water flow. Humans
may build dams to store water, control flooding, or generate
electricity. The Hoover Dam in Nevada has been providing hydroelectric
power for over 80 years now. It also
controls flooding of the Colorado
River, irrigates land, and supplies
water to nearby cities such as Las Vegas and Los Angeles.
Beavers, on the other hand, build dams out of sticks and mud to create ponds where they can build their lodges and store food. These dams also help slow down water flow, which can reduce erosion and create habitats for other animals such as fish, frogs, and birds.
In both cases, the presence of dams has a significant impact on the physical characteristics of the region. The water flow is altered, creating new habitats and changing the landscape. This demonstrates how living things, whether they are humans or animals, can play a role in shaping the environment around them.