Answer:
La economía geográfica busca construir una dimensión espacial en las teorías amplias del desarrollo económico y el cambio, mientras que la geografía económica representa el enfoque del geógrafo tradicional que se centra en descripciones de la distribución espacial de la actividad económica.
Explanation:
 
        
             
        
        
        
From the atmosphere 
Hope this helps!
        
             
        
        
        
<span>A. positive ions : Positive ions are formed when a neutral atom loses electrons. When neutral atoms lose electrons, the ions formed are always smaller than the neutral atoms. 
B. negative ions : Yes. When the neutral atoms gain electrons to form negative ions, they always become larger, because the addition of one electron increases the electrostatic repulsion of the outermost electrons, forcing them to drift apart.
C. cations  No. Cation is the same that positive ion.
D. none of the above
</span>
        
                    
             
        
        
        
I would say when an atom has its valence electron shell filled like a noble gas has, it is not easily changed.
I’m not entirely sure of what you’re asking, but if you’re talking about bonding then it would be an ionic bond that is not easily changed.