Salinity Of Oceans

 Salinity of oceans Salinity is defined as the ratio between the weight of the dissolved materials and the weight of the sample sea water. Generally, salinity is defined as ‘the total amount of solid material in grams contained in one kilogram of sea water and is expressed as part per thousand (%o) e.g., … Read more Salinity Of Oceans

Physical And Social Environment As Factors Of Crop Distribution And Production

 Physical and social environment as factors of crop distribution and production Physical Factors Climatic factors Climatic factors includes temperature, growing season, altitude, rainfall and wind. Most plants cannot grow if the temperature falls below 6°C or the soil is frozen for five consecutive months. As a consequence many areas are unsuitable for crop … Read more Physical And Social Environment As Factors Of Crop Distribution And Production

Oceans And Continents

 Introduction to Continents and Ocean Basins Continents and ocean basins being fundamental relief features of the globe are considered as ‘relief features of the first order’. It is, therefore, desirable to inquire into their mode of possible origin and evolu­tion. Different views, concepts, hypotheses and theo­ries regarding the origin of the continents and … Read more Oceans And Continents

Water Resources

 Water Resources  Rainfall: With an average annual rainfall of 1,170 mm, India is one of the wettest countries in the world. At one extreme are areas like Cherrapunji, in the northeast, which is drenched each year with 11,000 mm of rainfall, and at the other extreme are places like Jaisalmer, in the west, … Read more Water Resources

El Nino

 El Nino El Niño is the name given to the occasional development of warm ocean surface waters along the coast of Ecuador and Peru. When this warming occurs the usual upwelling of cold, nutrient rich deep ocean water is significantly reduced. El Niño normally occurs around Christmas and usually lasts for a few weeks to a few … Read more El Nino