The main function of the respiratory system is to allow the exchange of gases between the atmosphere and the lungs.
Hence,the only structure that carries out this function is the alveoli as other structures such as the nose,trachea and pharynx transport gases to the alveoli just so that it can can out its function.
Genetic information.The main job of DNA is to carry the code for making protein.A gene is a stretch of DNA that can be read by proteins called ribosomes, and copied I to type of nucleic acid called massenger RNA.
Man you need to change this to a different catagory
B - Many Agricultural practices bear some pretty bad impacts on the environment. A, C and D are incorrect.
<span>Answer D hop you get it </span><span>Answer</span>
