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: 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: Hailsreak is the accumulation of hail in a long, narrow path along the ground. A typical hailstreak may be 2 km (1.2 mi) wide and 10 km (6.2 mi) long, and a single thunderstorm may produce a severe hailstreak. [ It forms following hail formation, weakening updraft and hailstones reaching the ground. It takes about 15 to 20 minutes from the formation of hail to the depositing hail at surface. ] (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)