Final answer:
Dams meet geographic challenges by controlling floods and providing reliable water supplies. However, they can also have negative environmental impacts.
Step-by-step explanation:
One of the ways that geographic challenges are met with dams is through flood control. Dams can help prevent or minimize flooding by regulating the flow of water in rivers. By storing excess water during wet seasons and releasing it during dry seasons, dams can reduce the risk of floods.
Another way dams address geographic challenges is by providing reliable water supplies. Reservoirs created by dams can store large quantities of water that can be used for drinking, irrigation, and other purposes. This is particularly important in arid regions where water scarcity is a major issue.
However, it's important to note that dams can also have negative impacts on the environment, such as blocking the migration of fish, changing the ecology of rivers, and displacing habitats. These challenges need to be carefully considered and managed.