You are presented with the question "What removes waste from blood?" and the following answer choices: 
- exhaling
 - Leptospirosis
 - hemmhorage
 - Acids
 - excretion
 - glucose
 - bacteria
 - respiration

Now knowing that organs of excretion make up the excretory system and digestive system Excretory system removes waste and toxic substances from blood, choose the best answer.


 

     excretion    