KPSC KAS Prelims and Mains Exam
The uppermost outer solid and rigid layer of the earth is called crust. Its thickness varies considerably. It is as little as 5 km thick beneath the oceans at some places but under some mountain ranges it extends upto a depth of 700km. Below the crust denser rocks are found, known as mantle crust. … Read more
Land is a finite resource. Land availability is only about 20% of the earth’s surface. Land is crucial for all developmental activities, for natural resources, ecosystem services and for agriculture. Growing population, growing needs and demands for economic development, clean water, food and other products from natural resources, as well as degradation of land … Read more
An increase in the average temperature of Earth’s near surface air and oceans since the mid-20th century 4th assessment report of IPCC: global temperature increased 74+0.18 degree C during the 20th century. Caused by greenhouse gases Water vapour, Co2, Methane, Nitrous Oxide, Ozone, CFCs (in order of abundance) Since the industrial revolution, the burning of fossil fuels has increased … Read more
The ultimate source of atmospheric energy is in fact heat and light received through space from the Sun. This energy is known as solar insolation. The Earth receives only a tiny fraction of the total amount of Sun’s radiations. Only two billionths or two units of energy out of 1,00,00,00,000 units of energy … Read more
Rural-Urban Composition: For the first time since Independence, the absolute increase in population is more in urban areas that in rural areas Rural Population in India: 68.84% Urban Population in India: 31.16% Level of urbanization increased from 27.81% in 2001 Census to 31.16% in 2011 Census The proportion of rural population declined from 72.19% … Read more
Project River State 56. Damodar Valley Project Damodar West Bengal & Jharkhand. It includes Maithon & Tilaiya Dam on Barakar river in Bihar, Konar … Read more
According to FAO Food Security is “a situation in which all people at all times have access to adequate quantities of safe and nutritious food to lead a healthy and active life”. This definition requires three basic conditions to be met: 1) adequacy, i.e. supplies from domestic production, stocks and imports are sufficient to meet the … Read more
Drainage: Flow of water through well-defined channels. Network of such channels is called a drainage system . Drainage basin: An area drained by a river and its tributaries. Watershed: Boundary line separating one drainage basin from other. River basins are larger watersheds. Drainage pattern of an area depends on the geological time period, nature … Read more
The term Sustainable growth became prominent after the World Conservation Strategy Presented in 1980 by the International Union for the Conservation of Nature and Natural Resources. Brundland Report(1987) define sustainable development as the a process which seek to meet the needs and aspirations of the present generation without compromising the ability of the future generation … Read more
Beginning of the Universe started about 13.6 billion years ago,when the Big Bang created the universe from a point source. During this process, light elements, like H, He, Li, B, and Be formed. From this point in time, the universe began to expand and has been expanding ever since. Concentrations of gas and dust … Read more