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Explanation:
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Answer: The normal respiration rate for an adult at rest is 12 to 20 breaths per minute. While A respiration rate under 12 or over 25 breaths per minute while resting is considered abnormal.
Answer:
antibodies
Explanation:
The third line of defense is specific resistance. This system relies on antigens, which are specific substances found in foreign microbes. Most antigens are proteins that serve as the stimulus to produce an immune response. The term "antigen" comes from ANTI-body GENerating substances.
C) Flexibility; the type and frequency of activity are on target for improvement in this area
