I GENUINELY NEED THE ANSWER ASAP :o After a building is demolished, a contractor wants to separate a pile of rubble containing gravel, sand, iron nails, sawdust and concrete dust particles so he can recycle the parts. Use the following information to answer the following questions:
• concrete is made of limestone, which dissolves in acid
• sand is smaller than gravel
• iron is attracted to a magnet
• sawdust is less dense than water
Write a step-by-step process for the contractor to use to separate the 5 components of his rubble pile.