Which is a trend observed in the evolution of respiratory surfaces and lungs in vertebrates?
A) increased size
B) the presence of capillaries
C) increased surface area
D) gain in the ability to absorb oxygen across the skin
E) ability to move air into the lungs

Question

Quizplus · Accepted Answer

The greater the amount of surface area, the greater the speed and amount of gas exchange.

Which Is a Trend Observed in the Evolution of Respiratory