A wide range of marine mammals and fish live in the severe conditions of the Arctic ocean. Whales, dolphins, walruses and seals all make there home in this North Polar
region which is covered by ice most of the year. Which of the following is used for
insulation and buoyancy in these animals?

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.