The number of proteins in its nucleus determines an atoms

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

What is the problem in this article? what solution does the article propose?

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.