Question

1) List three characteristics of lungs which make them an efficient respiratory surface

Answer 1

(i) It has large surface area and branched.
(ii) Contain an extensive network of blood vessels.
(iii) It is thin, delicate and fine.

HOPE IT HELPS YOU
MARK AS BRAINLIEST

Answer 2

THREE CHARACTERISTICS OF LUNGS WHICH MAKE THEM AN EFFICIENT RESPIRATORY SURFACE ARE :

1) THEY HAVE A RICH BLOOD SUPPLY.
2) THEIR INNER SURFACE IS MOIST.
3) THEY HAVE LARGE COMBINED SURFACE AREA.