KPSC KAS Prelims and Mains Exam
The elements or mineral nutrients are always in circulation moving from non-living to living and then back to the non-living components of the ecosystem in a more or less circular fashion. This circular fashion is known as biogeochemical cycling (bio for living; geo for atmosphere). Nutrient Cycling: The nutrient cycle is a concept that describes … Read more
ENERGY FLOW- Energy is the basic force responsible for all metabolic activities. The flow of energy from producer to top consumers is called energy flow which is unidirectional. Energy flows through the trophic levels: from producers to subsequent trophic levels. There is a loss of some energy in the form of unusable heat at … Read more
located where river meets the sea. the most productive water bodies in the world The complete salinity range from 0-35 ppt is seen from the head (river end) to the mouth (sea end) of an estuary Coastal lakes which have their connection with the sea through small openings are better known as lagoons or … Read more
Wetlands are lands transitional between terrestrial and aquatic system where the water table is usually near the water surface and land is covered by shallow water. Essential as: control floods, water treatment, recharging of water sources, reduce sediments, check soil erosion, bulwark against encroachment by the sea, winter resort for birds and important … Read more
The greenhouse effect is a natural process that warms the Earth’s surface. When the Sun’s energy reaches the Earth’s atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. It is the process by which radiation from a planet’s atmosphere warms the planet’s surface to a … Read more
The 73rd and 74th Constitutional Amendment Acts, 1992, which gave Constitutional status to panchayati raj institutions (PRIs) and urban local bodies (ULBs) respectively, in both letter and spirit in order to bring about greater decentralisation and increase the involvement of the community in planning and implementing schemes and, thus, increase accountability. The Amendments left important … Read more