First cells on this planet lived in an atmosphere that lacked O2

Keep practicing — related questions

• Sometime during the late Archaean era an oxygen-containing atmosphere began to develop.
• In the atmosphere of the primitive earth there was no
• The primitive atmosphere of earth was devoid of
• According to the most accepted theory, the Earth atmosphere, before any life had originated, consisted of H...
• In the atmosphere of the primitive earth there was no
• According to one of the most accepted theory, the earth atmosphere (before any life had originated) consist...
• Which of the following was absent in primitive environment during origin of life?
• Which one of the following was not present in earth's atmosphere before the origin of life?