Question

deoxygenated blood drops off carbon dioxide waste at the alveoli of the lungs. other waste carried by blood is dropped off at the... kidneys for disposal when you breathe out. small intestine for disposal in urine. kidneys for disposal in urine. small intestine for disposal when you breathe out.

Explanation:

The kidneys filter waste from the blood and excrete it in the form of urine. The small intestine is mainly for nutrient - absorption, not waste - disposal in urine or when breathing out. Carbon dioxide is exhaled from the lungs, but other blood - carried waste goes to the kidneys.

Answer:

kidneys for disposal in urine.