''বাংলাদেশ ২০°৩৪' উত্তর অক্ষাংশ হতে ২৬°৩৮' উত্তর অক্ষাংশ পর্যন্ত এবং অপরদিকে ৮৮°০১´ পূর্ব দ্রাঘিমাংশ হতে ১২°৪১′ পূর্ব দ্রাঘিমাংশ পর্যন্ত বিস্তৃত। গ্রিনিচ মান মন্দির (লন্ডন) থেকে ৯০° পূর্ব দ্রাঘিমায় অবস্থিত। কর্কটক্রান্তি বা ট্রপিক অব ক্যান্সার বাংলাদেশের প্রায় মধ্যভাগ দিয়ে অতিক্রম করেছে। সুতরাং বাংলাদেশ ক্রান্তীয় অঞ্চলে অবস্থিত।
বাংলাদেশের মৌসুমী জলবায়ু ও সমভাবাপন্ন নাতিশীতষ্ণ আবহাওয়া বিদ্যমান। ভূপ্রকৃতির ভিত্তিতে বাংলাদেশ প্রধানত তিনটি শ্রেণিতে ভাগ করা যায়। যথা-
১। টারশিয়ারি যুগের পাহাড়সমূহ (মোট ভূমির প্রায় ১২%)
২। প্লাইস্টোসিন কালের সোপানসমূহ (মোট ভূমির ৮%)
৩। সাম্প্রতিক কালের প্লাবন সমভূমি (মোট ভূমির প্রায় ৮০%)
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1 hour ago
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