The surface temperature of the sun is 5,778k
        
             
        
        
        
Answer: it gives water
Drinking, cooking, electricity or hydroelectricity 
We can use it to grow food or use it in hydroponics
We can filter it into drinking water
        
             
        
        
        
All of the known planets in our solar system are nearly spherical.
        
                    
             
        
        
        
The answer is seafloor spreading