Sodium Chloride (table salt)
While there are probably many different types of salt in all seawater, the type that we see most is just classic table salt (NaCl)
I think its rough and jagged. Do you know the answer?
The human body has living cells that interact with other living cells (Food) and inorganic cells (Salt, Oxygen). It also has a lot of chemical reactions that simultaniously happen inside of it.
Inorganic systems usually do not interact with themselves, and the reactions are mostly exterior.