Answer:
microfilamenents, microtubules, and intermediate filaments are equally important
C. How long does it take a paper bag to break down?
Exhaled air has more carbon dioxide because the blood contains some carbon dioxide (a waste product) that is transferred to the air in the lungs, which is then exhaled. The result is that the exhaled air contains less oxygen and more carbon dioxide than the inhaled air. The air in the lungs also becomes humidified with water before it is exhaled.
The small intestines have microvilli in the lining which help to increase the surface area of the small intestines and help to absorb nutrients.
