MCAT Question A Day - 10/8/14 - Answer!
Which of the following was probably not necessary for the origin of life on earth?
A. H2O
B. hydrogen
C. O 2
D. carbon
C is correct. Life originated in an atmosphere with little or no oxygen.
Want more questions? - Click here to check out our MCAT Question A Day archive
C is correct. Life originated in an atmosphere with little or no oxygen.
Want more questions? - Click here to check out our MCAT Question A Day archive
