Answer:
leader? man? person, it could be anything depending from where this came
Copernicus was also one of the scientists who tried to explain the laws of nature and the universe. I hope this helped, sweetie.
Concrete is not a crystal.
Answer:
They are different
Explanation:
This is because one is primary and the other is secondary, there for pretty basic they're obviously going to be different
*sorry not a BIG eXpLaNaTiOn*