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Seafloor spreading occurs along mid-ocean ridges—large mountain ranges rising from the ocean floor. The Mid-Atlantic Ridge, for instance, separates the North American plate from the Eurasian plate, and the South American plate from the African plate.
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Answer:
The answer would be the first one
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Cold air is drier because the water molecules are more likely to condense to a liquid. 
This was the answer on my course, hope it helps!
 
        
             
        
        
        
Life would be very hard because then they may not be able to survive <span />
        
             
        
        
        
A the flowering of the four oclock plant at the same time