Easy. Answer is oxygen because it says which one was missing before any life was on earth. And in order to have life on earth you need oxygen!
:)
For the answer to the question above, I think this is <span>False and the answer is based on the book, Nirenberg, and Matthaei. 19- unlabeled amino acids. Cys-Val-Cys-Val. (pg. 318 & 319)</span>. I hope I helped you somehow. Have a nice day!
Photosynthesis deals with plants that are a living being receiving energy from sunlight which is not living.
Answer: Thanks for the tips.
Explanation:
Answer:
D. Tap water out of a steel bottle
Explanation: