Question

Why does respiration have to happen?

Answer 1

while respiration the oxygen will go inside and get energy

Answer 2

$\mathcal{\huge{\pink{\star\:Heyy\:Mate...!!\:\star}}}$

⭐ Respiration is important for human being bcz if Respiration doesn't happen then human beings got die.. in Respiration gasses changes..(e.g oxygen got inside and carbon dioxide got out).

Hope it's helps you....