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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.
Going south of taiga you would reach the temperate regions of the planet. These regions experience moderate temperatures on average that change during four distinct seasons. They h
Chromatin is made of DNA molecules associated to proteins known as histones.
The fragility of erythrocytes The fragility of erythrocytes is impaired in the absence of NADPH generation due to the deficiency of glucose-6-phosphate dehydrogenase thereby ca
Cardiomyoplasty This is a procedure wherein the latissimus dorsi muscle is wrapped around the heart and stimulated to contract synchronously with it. It has been largely given
PITUITARY GLAND (HYPOPHYSIS CEREBRI) - It develops from ectoderm of the embryo. The pituitary gland is located just below the hypothalamus. The pituitary gland is situate
FUNCTION S OF TESTOSTERONE - (a) It stimulates the growth and development of male secondary sex organs like the seminal vesicles, prostate and penis. It also helps to maintain
Tapetum - Anther Wall Layers Tapetum is the innermost and most important layer of the anther wall. It is generally composed of a single layer of cells. These cells completely
What is the problem that the theory of evolution and its rival theories try to solve? The problem that the theory of simply evolution, or evolution, and its rival theories try
Q. Explain Rodent Control and pests? In any food establishment, varieties of insects, pests and rodents pose a big threat to the maintenance of hygienic surroundings. They
Q. How does the nervous system get information about the external environment, the organs and the tissues? Information about the conditions of the internal and external environ
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