Transgression are the new clay sediment deposited on top of old beach material. Hope this helps!!
I think the answer is C. Carrying the Genetic Code. I believe DNA carries the code
Natural gas. I just searched it up.
The abrasion would be caused by the ocean waves and swell breaking up against the bedrock and soil of the coast so a major storm would increase abrasion as would a sea level increase which would put the edge of the ocean in contact with the bedrock and soil higher up the beach where it hadn't been attacked yet so initially there would probably be more abrasion there.
