Your cousin returns from a trip to caves from around the globe. he shows you some snot-like
material and states that it is alive. when you put it under the microscope, it is not made of
cells. it is not alive.

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.