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

Human diseases caused by bacteria, Q. What are some human diseases caused b...

Q. What are some human diseases caused by bacteria and what are their respective modes of transmission? The major human bacterial infections transmitted by respiratory secretio

Why is maternal milk important for baby, Q. Why is maternal milk important ...

Q. Why is maternal milk important for the immune protection of the baby? Besides being nutritionally important like maternal milk participates in the defense of the baby agains

What is the important characteristics of soy protein, The important functio...

The important functional characteristics of soy protein The most important functional characteristics of soy protein concentrates are water-binding (water adsorption) capacity,

Dot blot, Dot blot  is the technique for measuring the amount of one pertic...

Dot blot  is the technique for measuring the amount of one perticular DNA or RNA in the highly complex mixture. The samples are spotted onto the hybridization membrane (like nitroc

Describe the important factors of hand washing, Describe the important fact...

Describe the important factors of Hand washing Hand washing is an important practice to follow before doing any procedure for the patient. The infection can be transferred

What is the procedure of examining foot, Procedure of Examining Foot Le...

Procedure of Examining Foot Let us learn the steps of examining the foot and identify foot at risk. Steps to follow: 1. Make the patient comfortable. 2. Provide priv

What do you understand by heterotrophic, What do you understand by Heterotr...

What do you understand by Heterotrophic? Organisms which are not capable of converting light into chemical energy. They should consume other organisms or material produced by o

Zoology, give detail account of modes of locomotion in protozoa and describ...

give detail account of modes of locomotion in protozoa and describe various type of asexual reproduction in protozoa

Excretory system - kidney, Kidney - 2 in number. Dark red. Sl...

Kidney - 2 in number. Dark red. Slightly flattened. Bean shaped. 10 cm. long, 5 cm wide and 4 cm thick (In rabbit 20-25 mm). Weighing 150 gm in male 135 gm in fema

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