concentrates
v.v. to focus all your attention or effort on one thing. You can also use it to describe bringing a lot of things together in one place.
v. to direct one's attention or mental effort toward a single object or activity; to gather or collect in a high density within a specific area.
I need to concentrate on my homework right now.
The company decided to concentrate its marketing efforts on social media to reach a younger audience.
As the population began to concentrate in urban centers, the demand for efficient public transportation systems grew exponentially, forcing city planners to rethink the existing infrastructure.
The verb is often intransitive and followed by the preposition 'on'. When used transitively, it takes a direct object representing the thing being gathered or focused.
I must concentrate in my studiesI must concentrate on my studiesThe verb concentrate typically takes the preposition 'on' rather than 'in' when referring to focus.