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Njqqa ballz

Aperson travels 35 km in 0.4hrs, followed by 53 km in 0.6 hr. what is the average speed

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.

This is the nitrogenous base only found in rna