Answer:
Vomiting after eating,  eating very little.
Explanation:
There are no answer choices for me to choose from, but I hope that you will be able to choose your answer from the following information:
Bulimia nervosa is a psychological disorder in which individuals vomit food after ingestion in order to avoid weight gain, most of the time because they have either a fear gaining weight or a misconception of what their body looks like.
Anorexia nervosa is a psychological disorder in which individuals avoiding ingesting food or sometimes attempt not to eat anything at all because, similar to bulimia, they have either a fear gaining weight or a misconception of what their body looks like.
Hope this answer helps you! Please rate it and mark it as Brainliest! :)
Have a great day!
 
        
                    
             
        
        
        
3A)Amino acids-peptide
3B)Enzymes–speed up
3C)Active sites–substrate 
3D)Unchanged
3E)[follow the instructions given]
4A)DNA—RNA
4B)Nucleotide—Deoxyribose–Phosphate–Nitrogen base
4C)DNA
4D)Thymine–Adenine—Cytosine–Guanine
4E)Hydrogen bonds
        
             
        
        
        
Kidneys, Bone Marrow, and it Produces red blood cells.
        
             
        
        
        
- Radiation
- Convection
- Conduction