The removal of silver tarnish from silverware using aluminum foil and a solution of electrolyte is an example of
a) oxidation of aluminum metal.
b) reduction of silver ions.
c) an electrochemical cell.
d) all of the above

The answer is C. An electrochemical cell.

Explanation:

The aluminum ion react with the sulfide to form aluminum sulfide.

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.