Question

answer the long answer que plz ​

Answer 1

☆ INTRODUCTION

• When we breath we inhale oxygen and exhale carbon dioxide . The so called exchange of gases is necessaryfor meta bolic activities and can be considered as chemical process.

• Every organism , from an individual bacterial cell might blue whale , under goes respiration. The human resiratory system consist of group of organ and tissue that help to breath.

• The exchange of blood occur in tiny blood cells called alvoeli.

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