Climate changes thats what im guessing .. not too sure though ... sorry 
        
             
        
        
        
Just read the book and then circle the words you don't understand learn them and then read it again
        
                    
             
        
        
        
Answer:
A
Explanation:
because when sun shines on water, it turns into heat and evaporate
 
        
                    
             
        
        
        
Answer:Polaris is directly overhead (i.e. at zenith) at the North Pole and at the horizon for an observer at the equator. The rule of thumb for the altitude of Polaris is that the altitude of Polaris equals your latitude on Earth.
Explanation:Polaris is directly overhead (i.e. at zenith) at the North Pole and at the horizon for an observer at the equator. The rule of thumb for the altitude of Polaris is that the altitude of Polaris equals your latitude on Earth.