Gem= 2 Ruby
Precious Metal= 3 Gold
Common Mineral= 1 Gralphie
        
             
        
        
        
They can protest to use safer sources of energy like power plants. 
 
        
             
        
        
        
Salt concentration is the factor among the following factors given in the question that does not vary between a fast flowing river and a pond that receives no water input. The correct option among all the options that are given in the question is the second option. I hope the answer comes to your help.
        
             
        
        
        
Definite article is used before a noun (person place or thing) to indicate that the identity of the noun is known to the reader. 
indefinite article is used before a noun that is general or when its identity is not known.
        
             
        
        
        
Answer:
Sunlight hits a smaller surface area at the Equator so heats up quickly compared to the poles. Explanation: