Atmosphere of earth just before the origin of life consisted of

According to one of the most widely accepted theories earth's atmosphere before origin of life consisted of a mixture of

True/False Type Questions: The atmosphere of earth was same at the time of origin of life and as present now.

The atmosphere of the earth at the time of origin of life was I.reducing II.with lack of free oxygen III. oxidising IV.similar to recent atmosphere

According to one of the most accepted theory the earth atmosphere before any life had originated consisted of H_(2)O, H_(2), NH_(2) and

Abiotic origin of life is in progress on a planet other than earth. Based on the origin of life on earth what should be the conditions on the planet.

Who wrote the book'The origin of life on earth'.