Answer:
Exons because they are coding sequences
Explanation:
The sections of DNA (or RNA) that code for proteins are called exons.
 
        
             
        
        
        
Answer:
soluble molecules 
Explanation:
Soluble molecules dissolve completely when mixed with water, hence forming a solution 
 
        
                    
             
        
        
        
"Natural selection<span> is the differential survival and reproduction of individuals due to differences in </span>phenotype<span>. It is a key mechanism of </span>evolution<span>, it is a change of </span>heritable traits<span> in a </span>population<span> over time"</span>
        
                    
             
        
        
        
It is important to mention that "horizon" make reference to each layer that the soil has. Each of them has different characteristics which allow them to fulfill different roles. 
 If you want to plant the most appropriate horizon would be A. (A horizon) This is made up of mineral and decomposed matter and it presents a dark color. here many plats roots grown in.
        
             
        
        
        
The highest power objective because you will see the specimen perfectly