Which of the following is likely to have been absent in free form at the time of origin of life? A. Oxygen B. Methane C. Nitrogen D. Ammonia Right Answer: D. Ammonia Share : January 3, 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 -Which is the correct sequence of composition of plasma membrane in an animal cell?Originally the primitive atmosphere was reducing because?“Ylem” is term also use for?