Carbon-14 dating is a way of determining the age of certain archeological artifacts of a biological origin up to about 50,000 years old. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
Crystallization is a process where a solid forms into a substance we call crystal, this happens from precipitating from a solution, freezing, and more
The answer is 6.022• 10^23 atoms
Warm air other the ocean moves onshore I think