VERBS

be

ADV

totally
Kate sat up fully, her attention now totally concentrated

VERBS

be

ADV

highly, very
The liquid is found in a highly concentrated form

VERBS

be

ADV

heavily, highly, particularly, strongly, very
increasingly
largely, mainly, mostly, overwhelmingly, primarily
disproportionately
These jobs are disproportionately concentrated in the service sector
geographically
The immigrant community is strongly concentrated geographically

PREP

at, in
Most of the country's industry is concentrated in the north
within
Childbearing is concentrated within the first decade of married life