How are the five themes of geography different?

Where does oxidative phosphorylation take place

The map above shows where people live in the united states. areas that are darker blue are areas where people live close together. areas that are lighter colors are places where people live farther apart. as a geographer, if you were to study where people live and why they choose to live in these places, which of the six essential elements of geography would you be using?

Ray lo bisects nlm, lm=18, no=4, and ln=10. what is the value of x?