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It was all about the introduction of water pollution and its causes .in the next lesson we will dicuss some facts and figures about the water pollution

PRACHI GUPTA
Teaching is passion and learning from learners that what i believe is the best way of learning.Pursuing my Masters .Appeared 4 UGC and ibps

U
Unacademy user
sir age ke questions hindi me post kare
  1. introduction to water pollution by Prachi Gupta


  2. WHAT IS POLLUTION? Pollution is the introduction of something harmful into the natural environment that cause adverse change . Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants


  3. WHAT IS WATER POLLUTION? Water pollution is the contamination of water bodies, usually as a result of human activities. Water pollution is one of many types of pollution which results from contaminants being introduced into the natural environment.


  4. WATER: AN IMPORTANT ELEMENT OF EARTH Water is the most important element on earth. Our bodies are made up of 70 % water. The Earth's surface is covered by 70 %water. Most plant life is 90% water. Humans need to consume water in order to survive. It is a crucial resource here on Earth


  5. SOME PERCENTAGES ABOUT WATER:EARTH SURFACE 71 percent About 71 percent of the Earth's surface is covered with water, and the oceans hold about 97 percent of all Earth's water. Water also exists in the air as water vapour, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers, and even in you and your dog


  6. Distribution of the water on Earth How Water Works Ocean water: 97.2% Glaciers and other ice : 2.15 % Groundwater: 0.61% Fresh water lakes : 0.009 % Inland seas: 0.008 % resh oceans Frozen 77% Groundwate 22% . Soil Moisture: 0.005 % . Atmosphere: 0.001% . Rivers: 0.0001% Lokes Rivers and Streams 1%


  7. Examples of Water Pollution: The Ganga is the largest river basin in India, with geographical area of 9,00,000(lakhs) sq. km. and a stretch of 2525 km. it carries the heaviest sediment(waste or residues) load (2.4 billion metric tonnes per year).


  8. CAUSES OF WATER POLLUTION


  9. SEWAGE A main source of pollution is raw or partially treated sewage discharged into rivers, lakes and streams. The discharge of huge quantities of municipal and domestic wastes and sewage pollute many water bodies


  10. INDUSTRIAL WASTE Various types of industrial wastes are continuously poured in streams, rivers and lakes. The industries that cause pollution are printing, soap manufacture, food products, rubber and plastics, chemicals, textiles, steel, sugar factories, glass manufacture etc. If industrial wastes are not released directly into water bodies, they can also mix through the soil and pollute the ground water.