Answer:
isla, Mar Caribe y el Océano Atlántico, San Juan, puertorriqueños
Explanation:
Puerto Rico es una isla. - Puerto Rico it's an island.
Puerto Rico esta entre el Mar Caribe y el Océano Atlántico. - Puerto Rico is between the Caribbean Sea and the Atlantic Ocean.
La capital de Puerto Rico es San Juan. - Puerto Rico's capital is San Juan.
Los habitantes de Puerto Rico son puertorriqueños. - The inhabitants/residents of Puerto Rico are puertoricans.
We are called puertoricans and boricuas, it has the same meaning just different way to say it.
Hope this helps :)