Geography

Concept of sea floor spreading was given by Henry Hess which was crucial to establish the formation of different geological surface on the earth. The major findings were: The crust below the ocean floor was found only 7-8 km thick. The existence of mid Atlantic ridge was known, but it was found that mid oceanic … Read more

Desert plants tend to look very different from plants native to other regions. They are often swollen, spiny, and have tiny leaves that are rarely bright green. Their strange appearance is a result of their remarkable adaptations to the challenges of the desert climate. Aridity is the sole factor that defines a desert and is … Read more

According to ICAR Indian soils are classified as:- Alluvial soils:-Alluvial soils are formed mainly due to silt deposited by Indo Gangetic Brahmaputra rivers. In coastal regions some alluvial deposits are formed due to wave action. Black soils:-The black soils are found mainly on the Deccan lava region covering large parts of Maharashtra, some parts of … Read more

The earlier Green Revolution was centred on wheat and now what is required is a  comprehensive revolution, which covers the entire agriculture sector known as Rainbow  Revolution and it essentially means the following: Agricultural activities to change from subsistence and livelihood activities to as a commercial venture with focus on productivity and profitability. Crop diversification, … Read more

Shale gas refers to natural gas that is trapped within shale formations. Shales are fine-grained sedimentary rocks that can be rich sources of petroleum and natural gas. Over the past decade, the combination of horizontal drilling and hydraulic fracturing has allowed access to large volumes of shale gas that were previously uneconomical to produce.  Typical components of oil shale gas are usually methane, … Read more

Availability of raw material like iron ore, coal , limestone etc. An efficient transportation and infrastructure facility for import and export of finished goods. Availability of service sector , heavy funding is required and hence adequate availability of capital, Human capital for managerial roles Demand for iron and steel or the market has to be … 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

The practice of growing two or more crops simultaneously in a same field in definite row pattern is called intercropping. The row pattern may be in the ratio of 1:1, 1:2, and 1:3. It means after one row of main crop, one, two, or three rows of intercrops can be grown. Objective of intercropping: The basic objective … Read more

The study of temperature of the ocean is important for studying the movement of large volumes of water, distribution of marine organisms, other properties such as salinity. This distribution pattern can be studied under vertical and horizontal distribution. Factors responsible for variation in horizontal distribution: The average temperature of surface water of the ocean is … Read more

It is a deflecting force experienced due to rotation of earth. Because of Coriolis the air appears to turn towards its right in the northern hemisphere and towards its left in the southern hemisphere. The coriolis always acts in the perpendicular direction of the motion of air. It is zero at the equator and increases … Read more