Paragraph3:Thesamethinghappenstothisday,thoughonasmallerscale,whereverasediment-ladenriverorstreamemergesfromamountainvalleyontorelativelyflatland,droppingitsloadasthecurrentslows:thewaterusuallyspreadsoutfanwise,depositingthesedimentintheformofasmooth,fan-shapedslope
Sedimentsarealsodroppedwhereariverslowsonenteringalakeorthesea,thedepositedsedimentsareonalakefloorortheseaflooratfirst,butwillbelocatedinlandatsomefuturedate,whenthesealevelfallsorthelandrises;suchbedsaresometimesthousandsofmetersthick
Allofthefollowingarementionedinparagraph3asplacesthatsediment-ladenriverscandeposittheirsedimentsEXCEPToAmountainvalleyoFlatlandoAlakeflooroTheseafloor2
Paragraph5:Inadditiontoexploringthepossibleantecedentsoftheater,scholarshavealsotheorizedaboutthemotivesthatledpeopletodeveloptheater