Selective breeding
In selective breeding, the
desired genes from one organism are combined with genes of another
organism, resulting in a new combination of genes.
The selective breeding is quite voluntary and is not necessarily natural or congenital. It is the act of how people or individuals can choose traits in the gene pool of their choice  to produce their desired or goal organism in the process. This trait is influenced in the host of the specific sperm and egg cell which makes up the chromosomes. 
        
             
        
        
        
Answer:
Substance B is a group of hydroxide ions.
Explanation:
 
        
             
        
        
        
It’s all in socratic because i did that already and it was really easy
        
             
        
        
        
Altitude decreases the temperature in the troposphere....
        
             
        
        
        
I would think A - Volcanic eruptions can cause both global warming and global cooling.