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Soil-Environmental Components
The word soil is derived from Latin word 'solum' meaning earthy material in which plants grow. The soil is the consolidated outer layer of the earth's crust ranging in thickness from a mere film to three metres or more. It provides mechanical anchorage to plants, besides being a reservoir of water and plant nutrients. The soil also supports a rich and highly diversified micro-flora and fauna.
Typically, soil is a complex mixture of inorganic and organic materials. The inorganic materials, that is, the mineral constituents of soil are derived from parent material (the soil forming rocks) by fragmentation and weathering. The pore spaces formed between the mineral particles of soil are filled with water and gases. The organic components of soil comprise organic wastes, dead remains of plants and animals, and their decomposition products. Besides, a large variety of algae, bacteria, fungi and many small and large animals are invariably present in a fertile soil.
1. You have two bags of polymer. Bag A has 10 kgs of polymer with weight average molecular weight of 336.6 kg and Bag B has 20kg of polymer with weight average molecular weight 39
Pomology : This is the study of fruits and fruit yielding plants of commercial importance. Pomology is a branch of botany which studies or cultivates pome fruit, and particularly
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Hazard Analysis Two steps recognized as preliminary and detailed analysis of hazard are taken. Preliminary Hazard Analysis (PHA) serves two aims: (i) It can expedite bringi
A pair of ovaries are the reproductive organs in woman. They are present just below the kidneys in the abdominal cavity. Each ovary has several sac like structures called ova
How can the hypothesis that asserts that chloroplasts as well as mitochondria were primitive prokaryotes that associated in mutualism with primitive anaerobic eukaryotic cells be c
Q. Which are the two major metabolic gases transported by the blood? The major metabolic gases transported by the blood are molecular carbon dioxide (CO 2 ) and oxygen (O 2 ).
Bilateral - Metazoa Bilaterally symmetrical animals have the major axis running from head (anterior) to tail (posterior). They have a ventral (lower) and dorsal (upper) surfac
Q. Illustrate Wild Life Sanctuaries? You must have seen how some of the parks are fenced. The intention is to keep the animals from wandering out and not to destroy neighbourin
Q. Explain about Podophyllum? These species were long used by indigenous people in Americea and Asia, including for the treatment of skin cancers and warts. The combination of
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