Answer:
Im pretty sure this is what you mean Corrosion of Copper in the Atmosphere When oxidation occurs with iron, the result is called rust. A penny with a high copper content won't disintegrate in air, because once a surface layer of copper oxide forms it prevents further corrosion.
2 A Group of people with different abilities who cooperate to solve problems
The Indigenous people of the Canadian arctic/the Native Canadian arctic people, were the Inuit (indigenous) people.
