Question

Greeks propose fundamental substances: earth, air, fire, and water.
2 Many different cultures began to practice alchemy.
3 Robert Boyle pens “The Skeptical Chemist.”
4 Paracelsus developed iatrochemistry, the use of alchemy to create medicines.

Answer 1

what the order for this

Answer 2

Well, according to what you know, what would you say?

Answer 3

Here's a (potential) hint: Wouldn't you have to practice alchemy before developing ways to use it (such as creating medicines)?

Of course, I could be wrong.
I mean, Paracelsus sounds like a Greek name. Maybe you should put that one first.