concentrated

be

totally

During the exam, all the students were totally concentrated on their papers.

be

highly, very

We need to dilute this very concentrated orange juice before serving it to the children.

be

heavily, highly, particularly, strongly, very

increasingly

largely, mainly, mostly, overwhelmingly, primarily

disproportionately

Wealth is disproportionately concentrated among the richest families in our country.

geographically

The population in this region was heavily concentrated geographically in the coastal areas.

at, in

The city's population is heavily concentrated in the downtown area.

within

Most of the city's population is concentrated within a small area near the coast.