Answer:
Pandemic is related to disease and epidemic isn't
Explanation:
 
        
                    
             
        
        
        
Solving problems with science means that to solve the problem the scientific method is used. This method includes observing, research, hypothesis , test and conclusion with a help of lot high level theory. 
Without science there is not strict process to follow in order to resolve the problem end get to a solution. 
        
             
        
        
        
Answer: <u>Guanine
</u>
According to Chargaff's rule, the base pairing in the DNA and RNA is fixed. Adenine always pairs with Thymine in DNA and Uracil in RNA. Guanine pairs up with cytosine. This complementary base pairing is universal and constant. That's why amounts are also equal. It means if cytosine is 20% in any DNA sample, then amount of guanine would be 20% as well. 
 
        
             
        
        
        
Answer:
characteristics variety domesticated then crossbreed hope this helps.
Explanation:
i know a lot