Answer:
The Moon's phases repeat every 29.5 days, but it's orbit around the Earth only takes 27. 
Explanation:
Why? In that time, as our Moon moves around Earth, the Earth also moves around the Sun. Our Moon must travel a little farther in its path to make up for the added distance and complete its phase cycle.
 
        
             
        
        
        
Answer:
The Euphrates river
Explanation:
Along with the Tigris, the Euphrates river helped form the Fertile Crescent and the Sumerian civilization.
It starts where the Karasu and Murat rivers merge in eastern Turkey and continues southeasterly for 2800 km (1740 mi) through Syria and Iraq until it merges with the Tigris river at Al-Qurnah. There, it becomes the Shatt al-Arab waterway and empties into the Persian Gulf.
 
        
                    
             
        
        
        
"Sulla<span> took control of </span>Rome<span> in late </span>82<span> and early 81 BC after victories in the civil war of his own making, and those of his chief legate Pompeius Magnus. ... </span>Sulla<span> not only butchered the constitution through various reforms he would make, but also focused his power on the leading members of the Roman ruling </span>classes<span>." This quote should help!</span>
        
             
        
        
        
Answer: 1) Ganymede, 2) lo, 3) Europa, 4) Tidal heating, 5)  Callisto, 6) orbital resonance
Explanation:
 
        
             
        
        
        
Answer:
It allows for easier access to other South American countries for trade.
I hope this helps you!