The first life on Earth was ...

Explain the Oparin-Haldane theory regarding the origin of life.

Give scientific reasons: Life originated from the Earth's inorganic atmosphere in the past,but this no longer happens today.

Organic compounds first evolved on Earth,which were required for the origin of life,were:

Which of the following statements stands in favour of abiogenesis?
$I.$ Spontaneous generation
$II.$ Origin of viruses and microbes
$III.$ Origin of life from living organism
$IV.$ Origin of life from non-living organism
The correct combination is

The first life on Earth appeared in water,and evidence indicates that life originated in one of the following eras: