✔Theory of special creation:
It states that God created life by his divine act of creation.
✔Theory of Panspermia/Cosmozoic:
It stated that the spores or panspermia cane from outer space and developed into living forms.
✔Theory of spontaneous generation:
It stated that life originated from decaying and rotting matter like straw, mud, etc.
✔Theory of chemical evolution or Oparin-Haldane theory:
Life originated from pre-existing non-living organic molecules and that formation of life was preceded by chemical evolution.
