1.) Is dirived from organic materials.
2.) Does not naturally occur in a crystalline form.
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A mineral has a fixed chemical composition, and crystal format. Sometimes we may have two minerals with the same chemical formula - e.g. calcite and aragonite, but differ in crystallization.
Parraffin wax has an energy content of 11,250 cal/g. Not sure on another one
Saving money and and preserving the environment.
Biomass and temperature, erosion and mineral content.
density units are kg per cubic meter. if you reduce the weight, and reduce the size they cancel out, and the density is the same.