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.
Answer:
The independent variable is excessive noice exposure
The dependent variable is hearing
Explanation:
sorry for you having to wait so long have a mildly amazing day like me lol
Answer:
Models are used for understanding a process or phenomenon.
Explanation:
Advantages of using models:
1) It gives some information about the human impacts on earth's systems and carbon cycle.
2) It also helps in discovering the defects and errors.
Disadvantages of using models:
1) It did not fully explain the human impact on both earth and carbon cycle.
2) It is the simplified version not an actual version of the real situation of carbon cycle.
<span>Southern generals remained able to engage Union forces without additional troops or supplies. </span>
