Answer:
D. Alveoli
Explanation:
Functionally, the respiratory system is separated into a conducting zone and respiratory zone:
Conducting zone consists of the nose, pharynx, larynx, trachea, bronchi, and bronchioles. These structures form a continuous passageway for air to move in and out of the lungs.
Respiratory zone is found deep inside the lungs and is made up of the respiratory bronchioles, alveolar ducts, and alveoli. These thin-walled structures allow inhaled oxygen (O2) to diffuse into the lung capillaries in exchange for carbon dioxide (CO2).
The respiratory zone begins where the terminal bronchioles join a respiratory bronchiole, the smallest type of bronchiole, which then leads to an alveolar duct, opening into a cluster of alveoli.
"Volume and page numbers" is the one among the following choices given in the question that is the <span>least important information in finding it. The correct option among all the options that are given in the question is the fourth option or option "D". I hope that this is the answer that has actually come to your help.</span>
The symbiotic relationship is parasitic.
32 Chromosomes because the egg and sperm cell is 16 each so the double of 16 is 32.
