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???
Answer:
sunnyskies
Explanation:
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Answer:
PROTEIN. Protein is an important building block in the body because it's responsible for supplying amino acids that are used to create and repair cells, tissues, hormones, enzymes, red blood cells, and antibodies. Proteins also maintain fluid balance and transport substances throughout the body.
