Carbon monoxide poisoning is due to the formation of

Earthworm respires by

The volume of air breathed in and out during normal breathing is called

One molecule of haemoglobin carries how many molecules of oxygen?

Pulmonary ventilation movements are due to

Covering of the lungs is called

Chloride shift occurs in response to

Lungs have a large number of narrow tubes called

The site of gaseous exchange in the lungs is