The Mekong River flows through the countries China, Myanmar, Thailand, Laos, Cambodia, and Viet Nam.
        
             
        
        
        
Answer:
Option C, Use seismographs to predict volcanic eruptions
Explanation:
People living near volcanoes proximity are at high risk during the eruption period of volcanoes. As the volcano erupts it releases harmful gases and also the hot molten lava flows out of it thereby disrupting every thing that comes in its way. 
If people living in such areas are able to get pre information of volcanic eruptions then they can get time to shift to new safer place. 
Hence, option C is correct
 
        
             
        
        
        
You could name it two ways! You can either do IH or HI. Since there are only two letters, you can only rearrange or name IH 2 different times. 
Hope this helps :)
        
             
        
        
        
Answer:
In summer in the North Hemisphere, Earth is tilted and Closer to the Sun on the North.
Explanation:
 
        
             
        
        
        
Answer:
I think it may be A, and C. I'm not 100% sure though.
Explanation: