When a cell divides into two cells going through 4 phases.
Out of the following given choices;
a. they increase the amount of energy transferred from the
lungs to the blood
b. they increase the flexibility of the lungs as they expand
during inhalation
c. they increase the volume of the lungs, allowing more
oxygen to be inhaled
d. they increase the surface area of the lungs, allowing the
efficient gas exchange
The answer is D. Due to their microscopic nature, they are numerous in the lungs and are also circular-shaped so as to increase the surface area for gaseous exchange.
Other characteristics of alveoli that increase gas exchange are that they thinned-walled (with only a layer of cells) and moist.
I think it’s C an increase in producer population
Explanation:
the most common gas in the atmosphere is nitrogen and oxygen followed by CO2 etc...
Answer:
heat transfer in a fluid in which hot fluid rises and cold fluid sinks; setting up a cycle
