Geographica

Agriculture  The word Agri mas soil and culture means cultivation. It is the science, art, or practice of cultivating the soil, producing crops, and raising livestock and in varying degrees the preparation and marketing of the resulting products. Agriculture is another word for  farming . It includes both growing and harvesting crops and raising animals, or livestock. Types of Farming The physical attributes of the environment, technical advancements, and sociocultural customs all influence the cultivation techniques. There are two types of farming: commercial and subsistence. The following farming systems are used in various parts of India. Primitive Subsistence Farming It is an agriculture of "slash and burn." After clearing some ground, farmers plant cereals and other food crops. The farmers move and prepare a new area of land for cultivation as the fertility of the soil declines. In different sections of the nation, it goes by different names. The term "j...

  1.       Identify the weather with the help of the following features .                                ·          The northeast trade winds prevail over the country ·          Some amount of   rainfall occurs in Tamil Nadu coast ·          Total amount of winter rainfall locally known as Mahawat is useful for Cultivation of rabi crops.                 a) Hot weather Season               b) Cold Weather Season               ...

Topics covered - 1.An introduction to drainage 2.India’s Drainage Systems 3.Drainage Pattern of India 4.The Himalayan Rivers 5.The Indus River system 6.The Ganga River system 7.The Brahmaputra River system 8.The Peninsular Rivers 9.The Narmada Basin 10.The Tapi Basin 11.The Godavari Basin 12.The Mahanadi Basin 13.The Krishna Basin 14.The Kaveri Basin 15. Lakes 16.Role of Rivers in the Economy 17.Pollution of Rivers Drainage of a landmass refers to its river system. Small streams which flow from different directions usually come together to form the main river body.  This river drains into a larger water body like a lake, sea, or ocean. The area which is drained by a single river system is termed a drainage basin .  An elevated physical structure like a mountain or an upland sometimes separates two drainage basins. This physical feature is called the water divide.  Important Drainage Systems of India The drainage systems in India are dominated by b...

Topics to be covered - 1. Water 2. Fresh water. 3. Water scarcity 4. Causes and types. 5. Dams 6. Advantages and disadvantage 7. Rainwater harvesting 8. Old and modern methods Water Three-fourth of the earth’s surface is covered with water but only a small proportion of it accounts for freshwater, that can be put to use. Water is a renewable resource. Fresh water: 96.5 per cent of the total volume of world’s water is estimated to exist as oceans and only 2.5 per cent exists as fresh water. 70 per cent of the fresh water occurs as ice sheets and glaciers in Antarctica, Greenland and the mountainous regions of the world. Less than 30 per cent is stored as groundwater in the world’s acquirers. Fresh water is mainly obtained from surface run off and ground water. This is continually being renewed and recharged through the hydrological cycle. All the water moves within the hydrological cycle making water a renewable resource. Three fresh water sources are: Precipitation—from rainfall; Surfa...