Answer:
In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. A crystal structure is composed of a unit cell, a set of atoms arranged in a particular way; which is periodically repeated in three dimensions on a lattice.
Explanation:
Answer:
B. Warm front
Explanation:
A warm front weather forecast, when a cold weather is preceded by a warmer weather it is known as a warm front.