Explanation:
Most minerals can be characterized and classified by their unique physical properties: hardness, luster, color, streak, specific gravity, cleavage, fracture, and tenacity.Crystal form, cleavage, and hardness are determined primarily by the crystal structure at the atomic level. Color and density are determined primarily by the chemical composition.
Answer: genetic variation
What are two microscopic features of cardiac cells that help to distinguish them from other types of muscle cells?ANSWER: CORTICOSTEROIDS
Heaps and heaps and heaps and heaps of them!