Answer:
An abiotic factor is a non-living part of an ecosystem that shapes its environment.
Had to look for the missing options and here is my answer.
The one that gives the best description of the most common way how material is added to the continental shelf is this: "Deposition of continental <span>sediments". This deposition includes biological, physical, and even chemical processes that occurred in a span of time. Hope this helps.</span>
