2. Pollution is the introduction of contaminants into an environment What is the pollution

3. Pollution that causes instability, disorder, harm or discomfort to the physical systems or living organisms they are in. What are the causes of pollution?

4. Pollution can take the form of chemical substances, or energy, such as noise, heat, or light energy. Pollutants, the elements of pollution, can be foreign substances or energies, or naturally occurring;

5. when naturally occurring, they are considered contaminants when they exceed natural levels.

6. Pollution is often classed as point source or nonpoint source pollution.Prehistory Air pollution is a growing problem throughout the world. Indoor air pollution is one of the leading causes of lung cancer. Families in developing countries use open stoves for cooking and heating

7. Families in developing countries use open stoves for cooking and heating their homes. The. The smoke, which is full of chemicals and carcinogens, gets trapped inside where families eat and sleep. homes do not have proper ventilation.

8. . Outdoor pollution also causes disease and illness, especially in industrial cities such as Beijing, China, where cancer is the leading cause of death. China relies heavily on coal, which is considered the dirtiest source of energy.

10. . This pollution results mainly from the coal powered factories, which produce inexpensive goods for North American and European consumers. Outdoor air pollution is also a concern in many wealthy countries.

11. . Those who live and work in urban centres such as Los Angeles or Toronto experience many warm days beneath a layer of smog.

12. As more people move to urban centers, premature deaths caused by pollution are expected to increase worldwide. Today, the developed nations who achieved their wealth at the expense of the environment will be held accountable for protecting the earth’s resources for future generations

13. Pollution : تلوث / التلوث environmental : بيئي pollutants : ملوثات soil : التربة premature : سابق لأوانه

14. Majority : أغلية occur : حدث، وقع developing countries : البلدان النامية contaminated : ملوث toxic chemicals : المواد الكيميائية السامة regions : منطقة / اقليم sewage : مياه المجاري

15. hazardous waste : النفايات الخطيرة lung cancer : سرطان الرئة stoves : مواقد ventilation : تهوية carcinogens مسرطن – اصلها سرطان؛ بمعنى يسبب السرطان industrial : صناعي

17. King Edward I of England banned the burning of sea-coal by proclamation in London in 1272, after its smoke had become a problem. ] But the fuel was so common in England that this earliest of names for it was acquired because it could be carted away from some shores by the wheelbarrow

18. Air pollution would continue to be a problem there, especially later during the industrial revolution, and extending into the recent past with the Great Smog of 1952. This same city also recorded one of the earlier extreme cases of water quality problems with the Great Stink on the Thames of 1858, which led to construction of the London sewerage system soon afterward

19. Pollution began to draw major public attention in the United States between the mid-1950s and early 1970s, when Congress passed the Noise Control Act, the Clean Air Act, the Clean Water Act and the National Environmental Policy Act

20. Growing evidence of local and global pollution and an increasingly informed public over time have given rise to environmentalism and the environmental movement, which generally seek to limit human impact on the environment.