In present times, the origin of life is not possible from inorganic compounds due to:
1. Non-availability of raw material
2. High concentration of O₂ in the atmosphere
3. Decrease in temperature
4. Excess of pollution

First life on earth was:
1.  Cyanobacteria
2.  Chemohetrotrophs
3.  Autotrophs
4.  Photoautotrophs

There is no life on the moon due to the absence of:

1. O₂

2. Water

3. Light

4. Temperature