Weegy: Well the main culprit is the sun! The sun's energy evaporates liquid water, and changes its phase to water vapor. [ The vapor rises into the atmosphere, and becomes clouds, where the clouds condense and changes the vapor back into liquid, and whalla: rain drops falling on your head. That is the extreme simple explanation. Hope it helps ] User: what determines whather precipitation will fall as rain or snow? (More)

Weegy: An alluvial fan is a fan-shaped deposit formed where a fast flowing stream flattens, slows, [ and spreads typically at the exit of a canyon onto a flatter plain while A delta is a landform that is created at the mouth of a river where that river flows into an ocean, sea, estuary, lake, reservoir, flat arid area, or another river. Deltas are formed from the deposition of the sediment carried by the river as the flow leaves the mouth of the river. ] User: describe the process of eutrophication? (More)

Weegy: Eutrophication occurs naturally over geological time, but may be accelerated by human activities (e.g. sewage disposal or land drainage User: what is the greatest source of freshwater on earth? Weegy: Tectonic, volcanic or glacial activity for instance or check this link (More)

Weegy: A heat wave is a prolonged period of excessively hot weather, which may be accompanied by high humidity. There is no universal definition of a heat wave. [ [ A cold spell is a period of indeterminate length (usually short) marked by some action or condition. ] ] (More)

Weegy: Erosion is the removal of soil or rock from the ground, hills, or mountains by water, ice, rain, wind and glaciers. (More)