Increasing water vapor leads to warmer temperatures, which causes more water vapor to be absorbed into the air. Warming and water absorption increase in a spiraling cycle. Hope it helps!
        
             
        
        
        
C. often because t<span>here are three major types of </span>plate<span> boundaries. If </span>two<span> tectonic </span>plates<span> collide, they form a convergent </span>plate<span> boundary. Usually, one of the converging </span>plates<span> will move beneath the other, which is known as subduction. Deep trenches are often formed where tectonic </span>plates<span> are being subducted and earthquakes are common</span>
        
             
        
        
        
C) I and III only just got this question on usa test prep and therefore i'm right