GEOLOGY

Detailed explanation-1: -The lowest base level possible for any stream is sea level, the point at which the stream enters the ocean. 10. As stream channels develop into U-shaped valleys, the volume of water and sediment that they are able to carry increases.

Detailed explanation-2: -Groundwater is the smallest portion of the hydrologic cycle.

Detailed explanation-3: -Some of the precipitation that falls onto the land infiltrates into the ground to become groundwater. If the water meets the water table (below which the soil is saturated), it can move both vertically and horizontally.

Detailed explanation-4: -In a meandering river, water will tend to flow fastest along the outside bend of a meander, and slowest on the inside bend.