Important molecules that were present in the reducing atmosphere of primordial Earth were oxygen (O₂), hydrogen (H₂), and methane (CH₃).

Question

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The primordial Earth's atmosphere was reducing and primarily composed of molecules like hydrogen (H2), methane (CH4), ammonia (NH3), and water vapor (H2O), but not oxygen (O2), which was largely absent until the advent of photosynthetic organisms.

Important Molecules That Were Present in the Reducing Atmosphere of Primordial