Surface runoff is precipitation runoff over the landscape. Impervious areas cause excessive runoff. ... Still, it is true that much of the water in rivers comes directly from runoff from the land surface, which is defined as surface runoff. When rain hits saturated or impervious ground it begins to flow overland downhill.
3D microscopes contain zooming lens like camera's but some camera's do not have a 3D lens. Both of them record information that can later be analyzed visually. <span />
