Question

What was the idea of early Greek thinkers about origin of life?
Or
What is Theory of Panspermia?

Answer 1

Answer:

Origin of Life (by greekers)

The deep-sea vent theory suggests that life may have begun at submarine hydrothermal vents spewing key hydrogen-rich molecules. Their rocky nooks could then have concentrated these molecules together and provided mineral catalysts for critical reactions.

Theory of Panspermia

The panspermia hypothesis suggests life began on Earth when the "seeds" of life, already present in the universe, arrived here from space. Panspermia is the hypothesis that life exists throughout the Universe, distributed by space dust, meteoroids, asteroids, comets, planetoids, and also by spacecraft carrying unintended contamination by microorganisms