<span>A
mineral has to be naturally occurring, inorganic, solid, have a crystal
structure, and have a definite chemical composition. Coal is not a
mineral because it is carbon-based and came from fossilized plants. That
proves that it is organic and has no definite chemical composition,
defying two rules you would need to follow to be a mineral. Glass is a
non-crystalline solid. This means that the atoms are not arranged in a
regular and repeating pattern. A mineral by definition possess a
crystalline form, it has its elements arranged in a regular and
repeating pattern.</span>
An investigation is to search something up to look for the facts an demonstration is showing a reason of proof for something
<span>Muscle tone that is abnormally high and that increases during activity is characteristic of MUSCLE HYPERTROPHY. Muscle hypertrophy occurs when muscles develop micro-tears within the tissues. As these micro-tears develop, they become scar tissues that make-up muscles into the strong and sturdy characteristics that they have.</span>
