What are two freshwater resources that provide water for human use?

Rivers and groundwater (aquifers) are the two primary freshwater sources that humans depend on for drinking water, agriculture, and industrial use. Rivers provide easily accessible surface water and have been the foundation for human civilization throughout history, supporting agriculture through irrigation and providing transportation routes. Groundwater, stored in underground aquifers, supplies approximately one-third of the world's population and is particularly crucial in arid regions where surface water is scarce. Aquifers act as natural reservoirs, slowly filtering water through soil and rock layers. However, both resources face increasing pressure from population growth, pollution, and climate change. Sustainable management requires protecting watersheds, preventing contamination, and ensuring extraction rates don't exceed natural recharge rates.