Answer:
Phenylketonuria, Cystic Fibrosis and Sickle Cell Anemia, these all are disorders caused by hereditary mutation. 
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Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation. New genetic variation can be created within generations in a population, so a population with rapid reproduction rates will probably have high genetic variation.
        
                    
             
        
        
        
Answer:
The internal structures disrupted by this chemical are probably VACUOLES.
Explanation:
A vacuole is a large membrane-bound vesicle in a cell's cytoplasm.
The central vacuole of a cell houses the digestive processes which includes chemicals that come to attack the cell; also it helps the cell regulates it's water concentration during changing environmental conditions.
vacuoles are present in the absorptive cells (enterocytes) covering the wall of the intestine
 
        
             
        
        
        
D) Development of an organism's shape
 
        
                    
             
        
        
        
Answer:
B. Increased ecosystem stability
Explanation:
 If all species have differential responses to changes in the ecosystem over time, then the averaging of these responses will cause a more temporally stable ecosystem if more species are in the ecosystem. ... This effect is a consequence of competition as highly competitive species will negatively. 
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