Answer:Ions are formed by the addition of electrons to, or the removal of electrons from, neutral atoms or molecules or other ions; by combination of ions with other particles; or by rupture of a covalent bond between two atoms in such a way that both of the electrons of the bond are left in association with one of the
Explanation:
Humans have been around for ages
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Answer:West Africa had the advantage of being the closest geographically to the Sahara desert, and the wealthy Islamic Empires to the north. How ever the Sahara desert was a significant barrier to travel and trade. Caravans crossing the desert could easily get lost in the drifting, unmarked sands of the desert.
Explanation:
