Place the events in chronological order

3, 4, 2, and 1   (I numbered them 1-4 starting from the top)

Explanation:

First weathering breaks down rocks to form sediment, Then that sediment as well as fossils and bones from animals and plants get added together. Then flowing water adds clay or calcite to the mix, hardening them all together. Finally, after many years the rock has turned into hard solid rock with several types of inorganic and organic materials in it.

(I hope this helps you!)