Water shortages occur whenever the use of fresh water outstrips the supply from precipitation and the water cycle. While wasted water re-enters the water cycle and is eventually available again for re-use, the time necessary for water to pass into the water table and replenish aquifers means that overuse can temporarily drain these important water sources. Dry weather can also cause shortages due to a lack of replenishing precipitation.Know More
A major source of water overuse is agriculture. Agriculture accounts for 70 percent of the freshwater use in the world, and as much as 60 percent of that water is wasted due to poorly maintained irrigation equipment or poor irrigation techniques. This excess water simply runs off of farmland or is absorbed through the ground back into the water table, but it can take a considerable amount of time for it to return to the aquifer that initially supplied it.
Water shortages can also be economic in nature. Especially in dry regions of the globe, access to water can be extremely important, and communities may feud over rights to a particular reservoir. In some cases, water may be pumped from a source over a significant distance to provide water for citizens in dry areas, leaving those in the source region lacking their natural water supply.Learn more about Environmental Science
The effects of acid rain are most prominent in aquatic environments such as lakes, rivers, creeks and marches. However, acid precipitation is increasingly damaging forest ecosystems through the leeching of soil nutrients and weakening of trees' natural defenses.Full Answer >
The tundra and desert biomes receive the least amount of rainfall. The annual rainfall total of a tundra averages between 10 to 25 cm each year, while the desert receives fewer than 25 cm per year.Full Answer >
The density of water at standard temperature and pressure is 1 gram per centimeter cubed. The density of pure water is slightly less. Density is defined as the mass per unit volume of a substance.Full Answer >
The global water cycle is important because every living organism on earth depends on water to survive. Without water, all living organisms would die very quickly.Full Answer >