How the majority of oxygen gets transported?

What changes may be observed due to increase in carbon dioxide and hydrogen ions body?

Where is the respiratory rhythm center is located?

Carbon dioxide is harmful to the body.

External nostrils → vestibules → nasal chambers → internal nares → naso pharynx → X → lary…

Which of the following organisms undergo respiration through diffusion?

What is the primary site for exchange of gases in lungs?

Carbon dioxide is ___ times more soluble than oxygen.