A watershed describes an area of land that contains a common set of streams and rivers that all drain into a single larger body of water, so stagnant water in a swamp
        
             
        
        
        
Answer:
What goes up must come down
Explanation:
Whenever we jump up or throw a ball in the air, we(or the ball) always come back down to the Earth because of the Earth's gravity.
 
        
                    
             
        
        
        
The hind legs, I believe. That's why they are longer and stronger.