Steel is made of what?
Correct answer: Iron & Carbon
Calabtangan' Boyoyong
this material revolutionize th construction industry.
Player #92723922
Everything we have created on this planet has come from the ground, plants, animals and and water. That's awesome!
GraceSpace
intuited this answer as I wasn't really sure 😉
Player #31753367
Still find it stunning that eons ago ' someone somewhere ' created / discovered that perfect recipe