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What is Soil Aggregation and explain its beneficial role
Some organisms may play a beneficial role indirectly by creating better soil physical conditions e.g., by improving soil aggregation. You have read about the role of earthworms in soil granulation. Plant roots also promote soil aggregation with the help of their decay product. Gum or polysaccharides produced by certain microorganisms also cause soil aggregation. Azotobacter, Baijerinckia and Rhizobium are examples of gum producing bacteria.
Fire extinguishers You would recall the classification of fires dealt. Table summaries the type of extinguisher used for different classes of fire. Table: Summary of fire e
How to prepare hydrogen Hydrogen can be prepared from a dilute acid, like as hydrochloric or sulphuric, when it is chemically reacted with a metal like as zinc. The acid may be
Putting a point on a brush Secure a paint brush of some sort and get the bristles. Now dip the brush in water and you will view that surface tension has drawn the bristles tog
Opening the Airway If a casualty has stopped breathing, first of all we should clear the airway of the victim, so that he/she could inhale fresh air. The procedure is as follow
Mutarotation:- The process whereby the configuration of an anomeric carbon converts from a and p and vice-versa.
b) discuss briefly the scientific and technical achievements of the bronze age
Lifting things with compressed air Remove the bladder from a soccer ball or basket ball and place it on a table. Pile some books on the bladder and then blow into it.
Freezing by Contact with a Cooled Gas Different methods are available for freezing by contact with cooled gas. These include: i) Cabinet Freezing: This method involves ci
whats about body system
Brain: The centre piece of the nervous system is the brain which IS possibly the most organised form of matter known. It is unlike any other organ of the body, as ~t alon
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