Differentiate 3 main sources of water.
- The main sources of water are surface water, groundwater and rainwater.
- Surface water is any body of water above ground, including streams, rivers, lakes, wetlands, reservoirs, and creeks. The ocean, despite being saltwater, is also considered surface water.
- Ground water is water underground in saturated zones beneath the land surface. It fills the pores and fractures in underground materials such as sand, gravel, and other rock.
- Rainwater is typically devoid of all dissolved solids but contains dissolved gases (oxides of carbon, nitrogen and sulphur) which result in pH values of about 5.5 or lower.
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