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Determine about the Soil and its importance
Everyone knows about soil as a resource which fulfils the basic requirement of human kind by supporting variety of plants and other vegetation. It is difficult to give a unique definition for it, as its observation is quite subjective in nature. In a very broad manner, soil may be visualised as a "thin layer" of Earth's crust which serves as a natural medium for the growth of plants. However, it has different meanings to different people. To a farmer, soil is that portion of Earth's surface which he can plough and grow crops to fulfill needs of family and animals. For a civil engineer, soil is the foundation for all construction activity like roads, buildings, embankment of canals and drains etc. For an oil technologist, soil clays and clay minerals are the sources o f petroleum cracking agents. Thus, soil is a vital natural resource which needs proper understanding and management to maintain and improve its productivity, which in turn, helps to maintain a healthy and green environment.
Class of Crustacea - Copepoda Copepoda is a huge class of small (1-5mm) crustaceans occupying both marine and freshwater environments. Copepods form the several abundant and c
Phylum Mollusca (47,000 species) The segmentation and coelom may not exist. Diversification through modifications of head, foot; mantle and 'radula for feeding. .Visceralorgans
PHYSICAL STATE OF PROTOPLASM Several theories have been given about its physical structure - (i ) Granular Theory (Proposed by Altman, Hanstein, 1886) - Granules embed
In the previous section we discussed the concept of species in detail and concluded that the concept of biological species and Mayr's definition of species have a wide acceptance a
Q. What are the uses of National parks ? National Park is an area dedicated to conserve environment, natural and historical objects and to conserve the wild life therein. Natio
various parameters which are used in water quality measurement
What is the life cycle type of bryophytes? As in all plants the life cycle of bryophytes is diplobiontic (alternation of generations). In bryophytes the lasting form is the hap
High fibre diets High fibre diets: The patients are advised to eat high fibre cereals as whole grain flour and bread, whole grain bread cereals, whole wheat pasta and b
Explain how a cell produces and releases proteins. Proteins are made on ribosomes and packaged into vesicles by the Golgi apparatus. The vesicles move to the cell membrane and
Physiological Changes - Consequences of Aging Various physiological regulatory mechanisms show decreased efficiency due to aging. For instance, normally the glucose level in t
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