An animal dies in mud, decomposes, and leaves an imprint, which is later filled by sediment to form a solid copy of the original organism.
How is this fossil different from fossils of preserved remains?
3
Only hard tissue is preserved.
O Hard and soft tissues are preserved.
O Only soft tissue is preserved.
O There is little change to the preserved organism.

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.