Most important condition for the origin of life is presence of? A. Oxygen B. Nitrogen C. Water D. Carbon Right Answer: B. Nitrogen Share : January 4, 2018 Hassan Ali Zoology Total 0 Votes: 0 0 Tell us how can we improve this Mcqs? Captcha: + = Verify Human or Spambot ? Related Mcqs Check Below -Temperature regulation by sweating occurs in?Maintenance of high body temperature helps mammals in carrying out fast?Presence of mucous over the skin of frog is an adaptation for?