Social Sciences, asked by riyabaroi0, 1 month ago

কী কী কারণে আমাদের দেশে অক্সিজেনের মাত্রা হ্রাস পায়

Answers

Answered by sbhowmick796

2

Answer:

বিভিন্ন রকমের বায়ুদূষণের মাধ্যম্যে যেমন কলকারখানার ধুয়ো , যানবাহনের ধুঁযো ইত্যাদী।

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