Answer:
They form when sediment accumulates.
Explanation:
Sediment is deposited out of air, wind, gravity; sediment is formed when weathering and erosion break down a rock into loose source material in a source area.
<span> commensalism ........................................................ </span>
It would be capillary action
The nucleus. If a cell has a nucleus it is eukaryotic if it doesn't, it is prokaryotic.