Answer:
Yes Puerto Ricans are U.S citizens.
Explanation:
Political geography studies all the following except Economies ( answer A). Political geography is concern with study of both spatially uneven outcome of political processes and the ways in which political processes are themselves affected by spatial structure. It also involve study of boundaries and their associated region.
It should be A! Bowen's reaction series where minerals form from magma in predictable patterns! (:
I hope all is well, and you pass! Good luck, rockstar! (:
The answer is C. Earth's tilt and orbit. Hope I helped!