essay on air pollution in bengali
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Answer:
Air Pollution contamination of the atmosphere caused by the discharge, accidental or deliberate of a wide range of toxic substances. Often the amount of the released substance is relatively high in a certain locality, so the harmful effects are more noticeable. The major sources of air pollution are transportation engines, power and heat generation, industrial processes and the burning of solid waste. A new source of air pollution is an increasing 'hole' in the ozone layer in the atmosphere above Antarctica, coupled with growing evidence of global ozone depletion. Air pollution has also long been known to have an adverse effect on human beings, plants, livestock and aquatic ecosystem through acid rain.
Recently as in other parts of the world air pollution has received priority among environmental issues in Asia. This problem is acute in dhaka, the capital of Bangladesh and also the hub of commercial activity. The other urban areas like chittagong, khulna, bogra and rajshahi have much lesser health problem related to air pollution. In urban areas sometimes the houses are built on rocks and soils, which radiate radioactive gas from their basement. If this gas is inhaled for a long time it may cause lung cancer. In the rural areas of Bangladesh, the air pollution problems have not yet become a point of concern
Answer:
বায়ু দূষণ বলতে বোঝায় যখন বায়ুতে বিভিন্ন ক্ষতিকারক পদার্থের কণা ও ক্ষুদ্র অণু অধিক অনুপাতে বায়ুতে মিশে যায় । তখন এটি বিভিন্ন রোগ , অ্যালার্জি এমনকি মৃত্যুর কারণ হতে পারে । এছাড়াও এটা অন্যান্য জীবন্ত বস্তু যেমন ; পশুপাখি , ফসল ইত্যাদির ক্ষতি করে । দুষিত বায়ু সুস্থ পরিবেশের জন্য বাধা। ২০১৪ সালের WHO এর রিপোর্ট অনুযায়ী ২০১২ সালে বায়ু দূষণে প্রায় ৭ মিলিয়ন মানুষ মারা গেছে ।
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