Question

18 the skin does not function to: a exchange gases b retard water loss from deeper tissues c regulate body temperature d excrete waste substances

Explanation:

The skin helps in retarding water loss (acts as a barrier), regulating body - temperature (sweating and vasodilation/constriction), and excreting waste substances (sweat contains some waste). Gas exchange mainly occurs in the lungs, not the skin.

Answer:

A. exchange gases