Number one is "sand dunes".
Number two is "the breakdown of rock through mechanical disintegration and physical stress."
        
                    
             
        
        
        
C. Voters can use it to remove a governor from office in some states
        
             
        
        
        
Hello!
Normally South Koreans are not welcome or permitted to visit North Korea, at any time of the year. This is most likely because of the past conflict between the two countries. Otherwise I believe anyone should be eligible to visit North Korea without much hassle. Although, many people say that it is unsafe to visit the country because of their nuclear weapons, but who knows? 
I hope that answers your question!
        
             
        
        
        
Cell D is a plant cell and Cell C is a animal cell
        
             
        
        
        
<span> The himilayas are an example of an intervening obstacle, but that is an enviromental obstacle. You could have an economic obstacle such as a town along the way that may be in harsh poverty and you may not be able to continue migrating. Or a political obstacle: Migrating through a country that is ruled under a law that despises something about you like race, gender, culture, or personal status.</span>