4.
In Urey’s experiment to demonstrate the chemical evolution of life which of the following chemicals were refluxed and exposed to electric charge
A:
H2O, O2, NH3 and H2
B:
H2O, CH4, NH3 and H2
C:
H2O, O2, NH3 and P
D:
H2O, CH4, NH3 and P
The answer is:
B
