True, there are many vessels serving as a conduit<span> between the lungs and the heart.
The number of the vessel is many because all the carbon dioxide from body need to be released at the lungs. More vessel means more surface area and blood flow rate to do the diffusion of the gas which means increased diffusion rate. This will allow the lung to transfer oxygen and dump carbon dioxide faster.</span>
Answer:A and D
Explanation: Because that’s what US Test Prep said was right.
Increased use of antibiotics since the few that are immune will survive and reproduce and will out grow others that arent.
