Question

Atmosphere of earth just before the origin of life consisted of:

Options

• water vapours, CH₄, NH₃ and oxygen.

• CO₂, NH₃, and CH₂

• CH₄, NH₃, H₂ and water vapours.

• CH₄, O₃, O₂ and water vapours.

Answer 1

CH₄, NH₃, H₂ and water vapours.

Explanation:

Due to a scarcity of free molecular oxygen, the primitive atmosphere was dwindling. Ammonia (NH₃), water vapour (H₂O), hydrogen (H₂), and methane (CH₄) were all present in the early environment.