Answer:

erosions

Answer	Crossword Clue
EROSIONS	Rock-surface alterations
EROSIONS	Landfalls?
EROSIONS	Canyon formers

EROSIONS	Causes of disappearing beaches
EROSIONS	Geographical phenomena.
EROSIONS	Nature's wearing processes
EROSIONS	Ravages of wind or tide
EROSIONS	Depletions
EROSIONS	Deteriorations
EROSIONS	Deteriorations of a kind