(a) (i) What is respiration?
(ii) In a tabular form, state four differences between gaseous exchange and aerobic respiration

(b)(i) Explain the term residual air.
(ii) What is the importance of residula air to mammals?

(c) State four characteristic features associated with respiratory structures.

(d)(i) What is oxygen debt?
(ii) Outline three activities that can result in oxygen debt.