Notes and Study material for Exams
Flood and Drought Occurrence Drought Drought is a complex, slow-onset phenomenon of ecological challenge that affects people more than any other natural hazards by causing serious economic, social and environmental losses in both developing and developed countries. The period of unusual dryness (i.e. drought) is a normal feature of the Climate and weather … Read more
Impact of mining on forest and Environment Mining activities, including prospecting, exploration, construction, operation, maintenance, expansion, abandonment, decommissioning and re-purposing of a mine can impact social and environmental systems in a range of positive and negative, and direct and indirect ways. Mining can yield a range of benefits to societies, but it may also cause … Read more
Climate Change and Health: A Looming Crisis Climate change is no longer a distant threat; it is a present reality impacting every aspect of human life, including our health. The intricate web of interconnected systems that sustain life on Earth is being disrupted, leading to a cascade of health consequences that are already being felt … Read more
Concept Definition Carbon Sequestration Carbon sequestration is the process of removing carbon from the Atmosphere and storing it in a fixed molecule in Soil, Oceans or Plants. Carbon Sink An organism or landscape that stores carbon is called a carbon sink. Carbon source An organism or landscape that emits carbon is called a carbon source. Climate change adaptation … Read more
Census Of India : Economic and Social features Rural and urban Population Altogether, 833.5 million persons live in rural area as per Census 2011, which was more than two-third of the total population, while 377.1 million persons live in urban areas. Urban proportion has gone up from 17.3 per cent in 1951 to 31.2 per … Read more
Principal of inheritance and variation Inheritance or Heredity is the genetic information passing for traits from parents to their offspring, either through asexual Reproduction or sexual reproduction. This is the process by which an offspring cell or organism acquires or becomes predisposed to the characteristics of its parent cell or organism. Through heredity, variations exhibited … Read more
Evolution, simply put, is descent with modification. This definition encompasses small-scale evolution (changes in gene frequency in a Population from one generation to the next) and large-scale evolution (the descent of different species from a common ancestor over many generations). Evolution helps us to understand the history of life. Evolution is not simply a matter … Read more
Disaster manangement: some case studies Aspects of Disaster Management Disaster Prevention Disaster Prevention is the concept of engaging in activities which intend to prevent or avoid potential adverse impacts through action taken in advance, activities designed to provide protection from the occurance of disasters. Disaster Preparedness Disaster preparedness activities embedded with risk reduction … Read more
JOB CREATION As outlined in the NITI Aayog’s Action Agenda, India suffers more from the problem of underemployment (i.e. low-productivity, low-wage jobs) than Unemployment as for example: In 2011-12, agriculture engaged nearly 50% of the workforce but contributed 15% to GDP In 2010-11, within manufacturing, small firms employed 72% but output was … Read more
Fermentation Fermentation, chemical process by which Molecules such as glucose are broken down anaerobically. More broadly, fermentation is the foaming that occurs during the manufacture of wine and beer, a process at least 10,000 years old. The frothing results from the evolution of carbon dioxide gas, though this was not recognized until the 17th century. … Read more