Scattered about (6)
'scattered about' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for strewn that I've seen before include "Broadcast" , "Scattered about, littered" , "Scatttered about untidily" , "Spread all over the place" , "Spread everywhere" .)
(Other definitions for dotted that I've seen before include "Sparsely laid out" , "Stippled" , "Composed of small spots" , "Scattered" , "...the Is and crossed the Ts" .)
(Other definitions for here and there that I've seen before include "In various places" , "Sporadic localities?" , "in several places" .)