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Water Pollution and Global Warming

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Water Pollution and Global Warming
Assignment on “Water Pollution & Global Warming”

Course : Introduction to Public Health Course Code : PBH 101

Prepared for Dr. Maleeha Azeem (MeA) Course Instructor North South University

Prepared by Kazi Nazrul Islam Id : 1010275 030 Sec : 01

Date of Submission : 20 November, 2011

PBH 101

[ASSIGNMENT ON WATER POLLUTION & GLOBAL WARMING]

Table of Contents: Index Contents 1.0 Water Pollution 1.1 Introduction 1.2 Sources of Water Pollution 1.3 Common Contaminants 1.4 Health Hazards Caused by Water Pollution 2.0 Global Warming 2.1 What is Global Warming 2.2 Causes of Global Warming 2.3 Consequences of Global Warming 3.0 Reference Page no. 03 04 09 10

11 12 15 18

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PBH 101

[ASSIGNMENT ON WATER POLLUTION & GLOBAL WARMING]

1.0 Water Pollution 1.1 Introduction : Water is a vital natural resource which is essential for a multiplicity of purposes. We use water in many purposes. Likes drinking and other domestic uses, industrial cooling, power generation, agriculture (irrigation), transportation and waste disposal. In the chemical process industry, water is used as a reaction medium, a solvent, a scrubbing medium, and a heat transfer agent. As a source of life for man, plants and other forms of life it cannot be replaced. Water is essential for maintaining ecological systems necessary for the survival of humans. As a result it plays important roles in ecosystem support, economic development, cultural values and community well-being. Dozens of times a day those of us who live in the industrialized nations of the world enjoy a blessing denied to 75 percent of the world population: abundant supplies of clean water. But water is essential for life on earth. No known organisms can live without it. For centuries water has been used as a dumping ground for human sewage and industrial wastes. Added to them are the materials leached out and transported from land by water percolating through the soil and running off its surface to aquatic ecosystems. Water pollution is


References: :  Ch 19 & 20/BK’s book and others  http://www.water-pollution.org.uk/  http://en.wikipedia.org/wiki/Water_pollution  http://en.wikipedia.org/wiki/Global_warming  http://wwf.panda.org/about_our_earth/aboutcc/problems/  http://planetsave.com/2009/06/07/global-warming-effects-and-causes-a-top-10-list/  http://environment.nationalgeographic.com/environment/global-warming/gw-causes/ 18
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