This mineral has the property of crystallinity. Crystalline solids are characterized by their repeating units called unit cells. There are 4 common types of unit cells: primitive cell, body-centered cell, face-centered cell and the hexagonal cubic cell. Each of this have their own distinct unit cell lengths and coordination number.
Second answer. the cold war is the last of all ths given events
I'm pretty sure the first one is not a crater lol. The last one is a crater, the second one I think is a rift valley, and the first one volcano. Not sure tho as the image is not that clear but the last one is a crater.
The photosphere is the innermost layer of the Sun, and its also the visible surface of the Sun
The another name for the equatorial coordinate system is B. Celestial.
Happy Studying! ^=^
