What's the difference between rocks and minerals?A mineral is a naturally occurring, inorganic solid with a definite chemical composition and a crystalline structure formed by a geological processes. A rock is an aggregate of one or more minerals where as a rock may also include organic remains and mineraloids.
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you can see the answer at the pic
Density<span> is </span>defined<span> as the ratio between mass and volume or mass per unit volume.
Source is google
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<u>The answer is</u>: <em>B. </em><em>Energy lost to the environment during the reaction must be replaced.</em>
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