SELF STUDY

   Notes Class 10 Economics Chapter 2 – Sectors of the Indian Economy  Sectors of Economic Activities Sector  defines a large segment of the economy in which businesses share the same or a related product or service. When we produce a good by extraction and collection of natural resources, it is known as the  primary sector . Eg: Farming, forestry, hunting, fishing and mining. The  secondary sector  covers activities in which natural products are changed into other forms through ways of manufacturing. It is the next step after primary. Some manufacturing processes are required here. It is also called the industrial sector. For example, using cotton fibre from the plant, we spin yarn and weave cloth. Using sugarcane as raw material, we make sugar or gur. Tertiary sector  includes activities that help in the development of the primary and secondary sectors. These activities, by themselves, do not produce a good but they are an aid or support for the...

  Water Resources Class 10 Notes Social Science Geography Chapter 3 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; Surface water—in rivers, lakes, etc.; Ground water—water stored in underground acquirers which gets recharged by rainfall. Water scarcity: Water scarcity means shortage of water. It is usually associated with regions having low rainfall or drought prone areas. There are many other reaso...