Answer: Exhaled air consists of 78 percent nitrogen, 16 percent oxygen, 4 percent carbon dioxide and potentially thousands of other compounds.
Explanation: Does this help???
<span>I imagine the intended correct answer here is B. Chromosomal disease. However, it is worth mentioning that the correct term to use here would be chromosomal disorder. Chromosomal disorders are usually due to either the addition or subtraction of one chromosome.</span>
