The psychologist is using a Token Economy because for doing something, you get a reward in exchange.
        
             
        
        
        
20 grams or 39 grams of fiber everyday
        
             
        
        
        
Answer:
Joseph Lister successfully introduced carbolic acid (now known as phenol) to sterilise surgical instruments and to clean wounds. Applying Louis Pasteur's advances in microbiology, Lister accomplished the use of carbolic acid as an antiseptic, so that it became <u>the first widely used </u><u>antiseptic in surgery</u><u>.</u>
 
        
                    
             
        
        
        
Like turkey, chicken, octopus, cow, etc
        
             
        
        
        
Answer:
to help someone answer a question, click on the question then hit the "add answer" button, after putting the answer in the area to type, you hit the green "add your answer" in the top right corner. 
Explanation: