Answer:
Chemicals, energy, waste materials that cannot be naturally broken down, or other harmful substances. 
 
        
             
        
        
        
James Garfield was the Rosecrans's chief of staff who later became a president of the United States. James A. Garfield served as chief of staff under Major General William S. Rosecrans, the commander of the Army of the Cumberland. Garfield resigned in<span> December 1863 from the Army to take his seat in the U.S. House of Representatives.</span>
        
             
        
        
        
Answer: It remained about the same as private industry cooperated in
government programs.
Explanation:
 
        
             
        
        
        
Answer is A. hope this helps you