It is d. compounds because they have more than one element.
My educated guess should be the 3rd one
Sorry, I won't understand your words.
Answer:
Scientists believe the batteries (if that is their correct function) were used to electroplate items such as putting a layer of one metal (gold) onto the surface of another (silver), a method still practiced in Iraq today.
Explanation:
Answer:
variable: not consistent or having a fixed pattern; liable to change.
Explanation:
