Answer:
Tectonic Plate Map. The movement of Earth's tectonic plates shape the planet's surface. Plate boundaries are important because they are often associated with earthquakes and volcanoes. When Earth's tectonic plates grind past one another, enormous amounts of energy can be released in the form of earthquakes.
Explanation:
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At room temperature and normal atmospheric pressure, covalent compounds may exist as a solid, a liquid, or a gas, whereas ionic compounds exist only as solids, Ionic compounds exist in stable crystalline structures. Therefore, they have higher melting and boiling points compared to covalent compounds.
The elbow is made up of the humerus, radius and ulna so your answer is A
Astronomy is the scientific study of celestial objects. (Such as stars, planets, comets, and galaxies)