The correct option is THE ELECTRON IN THE OUTERMOST ELECTRON SHELL.
Different levels of energy exist in the atom of an element and these levels are filled with electrons. The electrons in the innermost shell has the lowest energy level while the electrons in the outermost shell has the highest energy level. For an electron to increase its energy level, it has to move to an higher shell; and to decrease its energy level it has to move to a lower shell.
        
                    
             
        
        
        
Answer:
Explanation:
Deoxyribonucleic acid is said to contain instruction for species characteristics because it carries the information that characterize an individual. 
DNA are made up of Nitrogenous bases that are unique codes specify by an individual and no two person has the same the DNA. 
Genes are genetic information or instruction that specify an individual. it is located in the chromosome in the nucleus. DNA contains gene which helps to make molecules called proteins. It is the basis of all inheritance and the expression of the gene is what produces the phenotype that is visible. 
 
        
             
        
        
        
Preserved footprints left behind by animals are called ichnites.
 
        
             
        
        
        
Answer: Farming
Explanation: Plowing the land is the  first source of wealth.