The early atmosphere was

Which was not present freely in the early atmosphere of the earth?

Which was not present freely in the early atmosphere of the earth?

Which one of the following gases probablyleast abundantin the early atmosphere?

Which of the following gas was not present in early earth atmosphere ?

Which of the following gas was not present in early earth atmosphere ?

The Early Empire

Nucleotides, porphyrins, polypeptides and other biochemicals developed non-ezymatically in early broth due to (a) Oxygen free atmosphere (b) high temperature (c) Irradiated environment (d) All the above