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>
<span>The best response is that it reduces the effects of fragility and skin atrophy.</span>
<span> A </span>test cross<span>, involves the breeding of an individual with a phenotypically recessive individual.
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Mushroom......A decomposer is something that can be broken down
Is there suppose to be a picture?
