Use the drop-down menus below to identify the organ that is responsible for each function of the excretory system. produces feces

excretes sweat

converts poisonous substances to less toxic forms

excretes carbon dioxide and water

produces urine

18. which statement about cancer is true?

What mistake did john needham make that caused him to conclude that spontaneous generation for microorganisms occurred? a. he re-contaminated his boiled broth solutions. b. he destroyed the vital force in the solutions. c. he did not boil his broth solutions, only warmed them. d. he failed to seal his flasks of boiled broth. e. he allowed his assistant to conduct the experiment which he did not monitor closely.

Identify the structure in organisms that do not have kidneys that is adapted to regulate water balance