GEOLOGY

Detailed explanation-1: -Light, gentle precipitation is more likely than heavy rain to end up as runoff. Low-lying areas often located near streams that develop from filled-in marshes. Fertilizers are picked up by run-off and enters the lake.

Detailed explanation-2: -Deposition occurs temporarily in the zone of transportation such as along meandering stream point bars, floodplains, and alluvial fans (discussed later), however, ultimate deposition occurs at the mouth of the stream where it reaches a lake or ocean. These deposits at the mouth of a stream form landforms called deltas.

Detailed explanation-3: -The infiltration of water into the sand is faster than into the clay. The sand is said to have a higher infiltration rate. The infiltration rate of a soil is the velocity at which water can seep into it.

Detailed explanation-4: -The main sources of water in soil are groundwater (water that rises against gravity from the groundwater table up the soil profile) and precipitation (water that infiltrates and percolates from the top-into the subsoil.