Oxygen
Kryptonite .
Kryptonite
Krypton
Krypton
no hey are made of superman's cells. no hey are made of superman's cells.
Krypton was the element named after Superman's home planet.
Magnesium
Superman is from the planet Krypton and gets his super powers from our yellow sun. His high molecular density contributes to his strength and durability. Green kryptonite is the only thing known to be deadly to him. Other types of kryptonite have various effects on him. Things that make Superman sick are some of these varieties of kryptonite and when people order large meals, then leave skimpy tips.
He's Superman.
Kryptonite
Superman did the atomic number of Krypton(Kr) which is 36
When there is a good villain in store for Superman.