A measure of the number of particles of a substance in a given volume would be concentration. <span>In chemistry, </span>concentration<span> is the abundance of a constituent divided by the total volume of a mixture. There are a number of ways expressing it such as molarity, molality, normality, ppm, percentage and the like.</span>
Hair and nails are part<span> of the integumentary </span>system<span>.</span>
One of the exceptional psychosocial undertakings among ages 2 and 6 is emotional regulation. In addition, emotional regulation of emotion is the capability to react to the continuing loads of involvement with the variety of emotions in a way that is communally tolerable and adequately supple to permit impulsive responses as well as the capability to delay impulsive responses as needed.
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The Uvula
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I think the answer is Extinction
