Geography

Krishna-Godavari (KG) basin, an excellent source of fuel methane Methane hydrate deposits in this basin are a rich source that will ensure adequate supplies of methane, a natural gas The study using molecular and culturing techniques revealed maximum methanogenic diversity in the KG basin, which is one of the prominent reasons to confirm it to … Read more

Frequent inundation of agricultural land and human settlement, particularly in Assam, West Bengal, Bihar and Eastern Uttar Pradesh (flooding rivers), coastal areas of Orissa, Andhra Pradesh, Tamil Nadu and Gujarat (cyclone) and Punjab, Rajasthan, Northern Gujarat and Haryana (flash floods) have serious consequences on the national economy and society. Floods do not only destroy valuable … Read more

After independence, India witnessed green , blue and white revolutions in farm, fishery and dairy sector respectively. Green revolution: It was initiated to achieve food security in the country. It included three components : continued expansion of farming areas, double-cropping existing farmland, using seeds with improved genetics. The Green Revolution resulted in a record grain … Read more

Ocean current are nothing but movement of volume of water in defined direction and    with an identifiable speed. These current regulate the temperature and salinity of ocean currents and also get regulated by them. Factors responsible for ocean currents: Earth rotation from west to east . It leads to North equatorial current and south equatorial … Read more

According to economic survey, In a year where temperatures are 1 degree Celsius higher farmer incomes would fall by 6.2 percent during the kharif season and 6 percent during rabi in unirrigated districts. Similarly, in a year when rainfall levels were 100 millimetres less than average, farmer incomes would fall by 15 percent during kharif … Read more

Groundwater contamination is the adulteration of water because of the increase in the concentration of certain pollutants. The major pollutants contributing to contamination are Arsenic, fluoride, Iron, uranium , nitrate etc. Causes of groundwater contamination are: Natural: Groundwater naturally contains high amount of pollutant due to geological formation. For example occurrence of fluoride is related … Read more

A farming systems that are “capable of maintaining their productivity and usefulness to society indefinitely and must be resource-conserving, socially supportive, commercially competitive,and environmentally sound.” Major components of sustainable agricultural system Soil and water conservation to prevent degradation of soil productivity Efficient use of limited irrigation water without leading to problems of soil salinity,alkalinity and … Read more

The factors, which affect the distribution of temperature of ocean water are as follows: Latitude: The temperature of surface water decreases from the equator towards the poles because the amount of insolation decreases pole-ward.   Unequal distribution of land and water: The oceans in the northern hemisphere receive more heat due to their contact with … Read more

Tropical Cyclone Extra tropical cyclone It has thermal origin and derives its energy from the latent heat of condensation It has dynamic origin involving coriolis force and movement of air masses. The energy of a temperate cyclone depends on the densities of air masses. It is confined to 10o – 300 N and S of … Read more