Which part of the respiratory system is composed of a single layer of epithelial tissues surrounded by a network of capillaries?

alveoli

trachea

bronchiole

Why might surface mining be less risky for miners than underground mining? a. surface miners can become trapped in a collapsed mine. b. surface miners work in dusty, enclosed areas. c. surface miners work aboveground. d. surface miners use elevators to enter mines.

Wich level of organization includes all the other levels or organizations

Resperation is a way to release carbon back into the atmosphere