Jawapan

2015-09-01T20:54:59+08:00

Ini Jawapan Diperakui

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Jawapan diperakui mengandungi maklumat yang boleh dipercayai dan diharapkan yang dijamin dipilih dengan teliti oleh sepasukan pakar. Brainly mempunyai berjuta-juta jawapan berkualiti tinggi, semuanya disederhanakan dengan teliti oleh ahli komuniti kami yang paling dipercayai, tetapi jawapan diperakui adalah terbaik di kalangan terbaik.
The use of wood or coal fuel for cooking, heating, and lighting, is said to be putting three billion people worldwide at risk of damaged health and early death.

There are many countries in the world, most in Africa and Asia that predominantly use wood or charcoal, or coal, to cook, heat, and light their homes - approximately one third of global population.

These smoky fuels are very dirty and the result of their combustion is high levels of indoor air pollution.  It is reported that in some areas, household air pollution is so high that it actually contributes to an increase of outdoor air pollution.

Because of the excessive levels of  household air pollution an estimated 600-800 million families worldwide are at increased risk of illnesses that include respiratory tract infections, pneumonia, COPD, asthma, and lung cancer.

The UK researchers from the Liverpool School of Tropical Medicine concluded that household air pollution killed approximately 4 million people in 2010. The researchers also reported that there are close to 3 billion people that are currently exposed to excessive levels of household air pollution.

Many third world countries have failed in their efforts to tackle household air pollution and the public awareness of the risks of cooking with wood and coal in poorly ventilated homes remains very low.

Scientists and health personnel in countries where household air pollution is still taking heavy toll need to work with governments and international health agencies to increase awareness of this issue in order to have any chance of success.
  • Jet4
  • Tangan Bantuan
2015-09-01T21:07:26+08:00

Ini Jawapan Diperakui

×
Jawapan diperakui mengandungi maklumat yang boleh dipercayai dan diharapkan yang dijamin dipilih dengan teliti oleh sepasukan pakar. Brainly mempunyai berjuta-juta jawapan berkualiti tinggi, semuanya disederhanakan dengan teliti oleh ahli komuniti kami yang paling dipercayai, tetapi jawapan diperakui adalah terbaik di kalangan terbaik.
Hazardous chemicals escape to the environment by a number of natural and/or anthropogenic activities and may cause adverse effects on human health and the environment. Increased combustion of fossil fuels in the last century is responsible for the progressive change in the atmospheric composition. Air pollutants, such as carbon monoxide (CO), sulfur dioxide (SO2), nitrogen oxides (NOx), volatile organic compounds (VOCs), ozone (O3), heavy metals, and respirable particulate matter (PM2.5 and PM10), differ in their chemical composition, reaction properties, emission, time of disintegration and ability to diffuse in long or short distances. Air pollution has both acute and chronic effects on human health, affecting a number of different systems and organs. It ranges from minor upper respiratory irritation to chronic respiratory and heart disease, lung cancer, acute respiratory infections in children and chronic bronchitis in adults, aggravating pre-existing heart and lung disease, or asthmatic attacks. In addition, short- and long-term exposures have also been linked with premature mortality and reduced life expectancy. These effects of air pollutants on human health and their mechanism of action are briefly discussed.