HPSC Prelims and Mains Notes, HPSC Test Series
Forest ecosystem includes a complex assemblage of different kinds of biotic communities. Optimum conditions such as temperature and ground moisture are responsible for the establishment of forest communities. Forests may be evergreen or deciduous which are distinguished on the basis of leaf into broad-leafed or needle leafed coniferous forests in the case of … Read more
The interrelations between organisms and environment on the land constitute “Terrestrial Ecology”. The most important limiting factors of the terrestrial ecosystems are moisture and temperature. TUNDRA The word tundra means a “barren land” since they are found where environmental conditions are very severe. There are two types of tundra- arctic and … Read more
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
Although the systems of ancient India do have their reflections in the Constitutions of India, the direct sources of the Constitution lie in the administrative and legislative developments of the British period. Regulating Act of 1773 This Act was based on the report of a committee headed by the British Prime Minister Lord … Read more
Pre-Harappan Period Lower Paleolithic Hand axe & cleaver industries Pahalgam, Belan valley (U.P), (600,000 – 60,000 BC) Bhimbetka, Adamgarh, 16 R Singi Talav Middle Paleolithic Tools made on flakes Bhimbetka, Nevasa, Pushkar, Rohiri (150,000 – 40,000 BC) … Read more
Notification on Environmental Impact Assessment (EIA) of developmental projects 1994 under the provisions of Environment (Protection) Act, 1986 making EIA mandatory for 29 categories of developmental projects. One more item was added to the list in January, 2000. environmental impact assessment statutory for 30 activities Environment Impact Assessment Notification of 2006 has categorized the developmental … Read more
Waste minimization is an appropriate strategy to address the problems of industrial pollution. The objective of the scheme is to assist the small and medium scale industries in adoption of cleaner production processes. • A scheme on adoption of clean technology and promotion and establishment of waste minimization circles in small and medium scale industries … Read more
The rapid growth of technology, upgradation of technical innovations and a high rate of obsolescence in the electronics industry have led to one of the fastest growing waste streams in the world which consist of end of life electrical and electronic equipment products. It comprises a whole range of electrical and electronic items such as … Read more
Sound is measured in decibels (dB). An increase of about 10 dB is approximately double the increase in loudness. A person’s hearing can be damaged if exposed to noise levels over 75 dB over a prolonged period of time. The World Health Organization recommends that the sound level indoors should be less than 30 … Read more
Soil Pollution is the Contamination of the soil by human and natural activities which may cause harmful effects on living beings. This may be due to the following factors. (i) Industrial wastes: Industries are the major causes for soil pollution Textiles, steel, paper, Cement, oil, dyeing and other industries are responsible for soil pollution. Toxic … Read more