Aproposed explanation in evolutionary biology stating that species are generally stable over long periods of time. occasionally there are rapid changes that affect some species which can quickly result in a new species.

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

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.