Question

i)draw a labelled diagram of the respiratory system of human beings with diaphragm at the end of respiration
ii) list four conditions required for efficient gas exchange in an organism

Answer 1

(ii) 1.Large surface area for easy gas exchange.
2.Fine and delicate surface for easy exchange of oxygen and corbon dioxide.
3.Mechanism for moving air in and out of the respiratory surface.
4.placement of respiratory surface within the body for protection.

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Answer 2

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