Which metal increases steel's resistance to rust when alloyed?

Chromium

Who is the villain dog catcher in "Lady and the Tramp"? Phoebe suspects Chandler is having an affair when spotting him with what secret object? Which beverage originated from leaves harvested from the Camellia sinensis plant? Who was the star of the arcade platformer released by Namco titled "Dig Dug"? What geometric figure has exactly five vertices and eight edges?