Answer:
B. They both moisten and warm the air before it enters the lungs.
Explanation:
The statement "<span>Isometric contractions are important contractions that allow humans to hold their posture over time." is true.
</span><span>the skeletal muscle </span>contractions<span> are either </span>isometric<span>, in which the muscle does not change its length, or </span>isotonic<span>, in which the muscle changes its length without increasing tension.</span>
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