Answer:
The trachea serves as a passage for air, moistens and warms it while it passes into the lungs, and protects the respiratory surface from an accumulation of foreign particles.
I think B is the answer The Clean Air Act That prevented air pollution and protected the ozone layer as well as promote public health. This act gave Enviromen. Protection Agency the power to take effective action fighting environmental air pollution
C ........................i think
Answer:
15. Cell 4 and Cell 7 will not be able to synthesize a major biological molecule. What molecule is this? Protein.
