Beginning in the mid 1600's Earth entered into a mini-ice age. 1815 was known as the "year without a summer" and snow fell in many European countries during the summer months. The prolonged climate change is attributed to low sun spot activity, while the summer snow is believed to be the result of
A major volcanic eruption.
        
             
        
        
        
Answer:
the element oxygen , represented by the symbol o, is classified as a pure substance
 
        
             
        
        
        
The correct answer is C: the gravitational forces due to the sun and the moon cancel each other's effect. 
 
        
                    
             
        
        
        
Answer:amino acids
Explanation: because i am right