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Forms of Soil Water
Gravitational Water or Ground Water: After a heavy rain or irrigation, much of the water drains or sinks downwards. This is called gravitational water. This is of little significance in most soils because it drains downwards rather quickly under the influence of gravity.
Capillary Water: Some amount of water is retained aganst the pull of gravity in the minute spaces between the fine soil particles as thin films surrounding the particles and thicker ones where the particles touch each other, and a part of water is absorbed by the soil colloids. The downwards pull of gravity reduces these films to a minimum thickness. This form of soil moisture is in such a state that its movement as a liquid in any direction is so limited as to be practically negligible.Hygroscopic Water: Even air-dried soil contains appreciable amount of water, If we heat apparently dry soil in a closed container, we can see drops of water deposited on the lid. This relatively small amount of moisture is termed as hygroscopic water. It is held so tenaciously by the soil colloids that it is not available to plants.
Explain the Control of Air Pollution a. Air belongs to everyone Need it to treat air pollution as public problem b. Air pollution is an inevitable concomitan
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Calvin cycle (the aka Calvin-Benson Cycle or the Carbon Fixation) is the series of biochemical, enzyme-mediated reactions during which the atmospheric carbon dioxide is reduced an
Test of Deep vein Thrombophlebitis Place blood pressure cuff on unaffected calf and inflate until pain is elicited (usually greater than 150 mm Hg). Place blood press
The North Island saddleback or tieke, Philesturnus rufusater, is an endemic New Zealand bird. Saddlebacks inhabit the middle or lower layers of the forest, and eat small invertebra
What proportion of children with Down syndrome do you expect when women with down syndrome have children with men who have 46 chromosomes? Justify answer
classification of all organisms under d phylum protozoa
#what is coelenterata?
Littoral and Benthic Zone Littoral Zone This is the shallow water zone, near the shore, where light penetrates to the bottom. Rooted plants can grow only in this region.
Define Calcium requirements of infants? The calcium requirements of young infants are computed from the calcium content of breast milk and volume of breast milk intake. Up to 6
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