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শ্বসন কি?

Md. Saifur Rahman

অক্সিজেন সহযোগে খাদ্যদ্রব্য জারিত হয়ে শক্তি ও CO₂ উৎপন্ন করার প্রক্রিয়াই হলো শ্বসন।

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