Astivya RAS class notes

LAKE ECOLOGY

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  Any – body of standing water, generally large enough in area and depth, irrespective of its hydrology, ecology, and other characteristics is generally known as lake. Ageing of Lakes The nutrient enrichment of the lakes promotes the growth of algae, aquatic plants and various fauna. This process is known as natural eutrophication. Similar nutrient … Read more LAKE ECOLOGY

Environment and Ecological Issues

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ECOLOGY   Ecology is  defined “as a scientific study of the relationship of the living organisms with each other and with their environment.” The classical texts of the Vedic period such as the Vedas, the Samhitas, the Brahmanas and the Aranyakas-Upanishads contain many references to ecological concepts .The Indian treatise on medicine, the Caraka- Samhita … Read more Environment and Ecological Issues

SECOND GREEN REVOLUTION

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SECOND GREEN REVOLUTION The main objectives of the second Green Revolution are: (i) To raise agricultural productivity to promote food security (ii) More emphasis on bio-technology (iii) To promote sustainable agriculture (iv) To become self-sufficient in staple food, pulses, oil seeds, and industrial raw material (v) To increase the per capita income of the farmers … Read more SECOND GREEN REVOLUTION

FUNCTIONAL CLASSIFICATION OF TOWN AND PROBLEM OF HUMAN SETTLEMENT

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FUNCTIONAL CLASSIFICATION OF TOWN AND PROBLEM OF HUMAN SETTLEMENT The definition of function varies across the disciplines. In political science it refers to duties, in mathematics it means the relationship between two variables and in geography it is synonymous to occupation. Geographers have classified towns on the basis of their site, situation, size, rank, location … Read more FUNCTIONAL CLASSIFICATION OF TOWN AND PROBLEM OF HUMAN SETTLEMENT

Liberation War of Bangladesh

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  The Liberation War of Bangladesh in 1971 was the culmination of a 25-year tumultuous relationship between East and West Pakistan. The British failed to keep a united India as riots started between the Hindus, Sikhs and Muslims in 1946. The riots were so widespread that on August 14, 1947 India was portioned into two … Read more Liberation War of Bangladesh

Natural Vegetation of Rajasthan

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  Rajasthan is blessed with great variety of natural resources ranging from scanty vegetation in the western arid region to mixed delicious and sub-tropical evergreen forests in the east and south east of Aravali ranges. Forest cover is 32744.49 sq.km.(12475 sq.km. is reserved, 18222 sq.km.is Protected Forest 2046.75 is unclassified forest) which is about 9.57% of the total … Read more Natural Vegetation of Rajasthan

chemical bonding and molecular structure

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Chemical Bonding and Molecular Structure The smallest particle of element is atom and the smallest particle in a compound is molecule. The force or the binding that keeps the atoms in the molecule combined during the formation of molecule is called chemical bonding. The concepts like that of Kossel-Lewis, VSEPR principle, valence bond theory, molecular … Read more chemical bonding and molecular structure

Rajasthan Geography-RAS/RTS Mains Topic wise Solved Question Papers

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Guess Questions for Ras Rts Mains:- Why Rewat hill of Rajasthan is famous? Write short note on soils of Rajasthan.  Desacribe the physiographic charector of Rajasthan and also mention the importance of Arawali mountain.   1- Deliniate natural regions of Rajasthan and describe any one of them.  6 marks-RAS/RTS Mains-2010 2- Describe the role of … Read more Rajasthan Geography-RAS/RTS Mains Topic wise Solved Question Papers

Bio diversity and conservation

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Biodiversity and conservation Biodiversity, or biological diversity, is the variety of all life forms.Sum total of all the variety of living organisms on earth constitute biodiversity. There are three levels of biodiversity:  genetic diversity—the variety of genetic information contained in individual plants, animals and micro-organisms  species diversity—the variety of species  ecosystem diversity—the … Read more Bio diversity and conservation

The Indus Valley Civilization : Origin, antiquity, extent, authorship and main features

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Indus Valley Civilization   Indus Valley Civilization was the first major civilization in south Asia, which spread across a vast area of land in present day India and Pakistan (around 12 lakh sq.km). The time period of mature Indus Valley Civilization is estimated between BC. 2700- BC.1900 i.e. for 800 years. But early Indus Valley Civilization had … Read more The Indus Valley Civilization : Origin, antiquity, extent, authorship and main features