Ground water, Biology

Assignment Help:

Ground Water

Ground water represents a major subterranean reservoir of fresh water. In general. it is not tapped by plants as it is too deep and does not suffer from loss due to evaporation. It slowly flows through the underground porous substratum from one place to another under the influence of gravity. Its flow may vary from a few millimetres to as much as a metre or so per day. At some places ground water reappears at the surface in the form of a spring. The zone of sub-surface formation that provides water to wells is called an aquifer. Some aquifers exhibit an unusually high hydrostatic pressure to force water upto the soil surface when a well is dug. Such a well from which water is pushed automatically to the soil surface is called an artesian well. In areas devoid of lakes and rivers ground water is the most important source of water.

A close examination of the global distribution of water resources reveals three important features. First, much of the water is stored on more or less permanent basis. The largest quantity of water is in the oceans. The Arctic and Antarctic ice masses, glaciers and lakes are also major water reservoirs not available to man. Second, some of the Earth's water is in constant flux represented by snow, rainfall, cloud drift and river flow towards the sea. Third, the water on land is very unevenly distributed.


Related Discussions:- Ground water

Viral diseases - avian encephalomyelitis, V i ra l Diseases A v ...

V i ra l Diseases A v ian encephalomyelitis This is enterovirus disease of chicken, pheasants, turkeys and Japanese quails caused by the member of the family Pi

What is atom, What is atom? Atoms are the smallest component of matter ...

What is atom? Atoms are the smallest component of matter that determine its unique chemical and physical properties. They are composed of negatively charged electrons, positive

Designer meat products, D e s ign e r Meat Products Designer/healt...

D e s ign e r Meat Products Designer/health meat products low in sodium, fat, calories could be produced by incorporating fat replacers, fibers and natural antioxidants an

Where would expect to see its growth, If you inoculate an organism know to ...

If you inoculate an organism know to chemically reduce sulfur (as done by organisms capable of anaerobic respiration), where would you expect to see its growth in the test medium u

Explain nsp and food hydrocolloids, NSP NSP or dietary fibre is the nam...

NSP NSP or dietary fibre is the name given to a group of materials found in the cell walls of plants which gives the plant its structure and form. Food hydrocolloids Fo

Making leaf collections, Making leaf collections Collect young leaves o...

Making leaf collections Collect young leaves of as many varieties of plants as possible. Place various layers of news- paper or blotting paper on a firm, smooth board. Next org

According to their morphology how are bacteria classified, According to the...

According to their morphology how are bacteria classified? Bacteria present dissimilar morphological patterns. A bacterium can be classified into coccus, bacillus, vibrion or s

Sonology, Sonology : This is the study of hearing. Sonology is a type of sc...

Sonology : This is the study of hearing. Sonology is a type of science of neologism which is used to describe the study of sound in a variety of disciplines. In medicine, this term

Define the antigen-presenting cells of the immune system, Q. What are the a...

Q. What are the antigen-presenting cells of the immune system? The antigen-presenting cells of the immune system also known as APC cells are cells that do digestion and phagocy

Lumpy skin disease, L u mp y skin disease The disease, reported from...

L u mp y skin disease The disease, reported from Sudan in 1970 and Egypt in 1988, is caused by a member of the Capripox virus. It affects cattle and is restricted to African

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd