Cual es la principal característica de las actividades del sector terciario

Its in the national history museum and you can't se the original because its locked away in a vault 

I’m confused ///: : : :

Aristotle thought so every portion of the earth tends toward the center until by compression and convergence they form a sphere. travelers going south see southern constellations rise higher above the horizon.~ hope this !

Poaching of all these specific species