Answer:
contraction and relaxation of the heart
Explanation:
Answer:
pharynx, larynx, trachea, bronchi
Explanation:
During the inhalation through the nose or mouth the air first enters the "pharynx" which is also called as throat,
then the air moves towards the "larynx" . Is a passage between the pharynx and the trachea
Through larynx the air then moves toward the "trachea". It is passage connecting the larynx and the bronchi
and then the air inhaled reaches to the "bronchi" of lungs.
hence, the correct order is "pharynx, larynx, trachea, bronchi"
The meatpacking plants were mainly concerned about making money.
