Key differences, features, and comparative analysis of Theory and Idea / Status.
| Theory | Idea / Status |
|---|---|
| Panspermia | Life (spores) came from outer space — an early belief of some astronomers. |
| Spontaneous generation (abiogenesis) | Life arose from non-living/decaying matter — disproved by Louis Pasteur. |
| Chemical evolution (Oparin–Haldane) | First life arose from pre-existing non-living organic molecules under a reducing atmosphere. |
This comparison table is part of the chapter notes for Evolution. Get complete notes, flashcards, active recall sheets, and test prep modes: