Extinction events: Difference between revisions
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Sagan 4 has had many general extinction events over the years. Though most of what one would want to know about
=Alpha=
==Early Extinction Events==
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==Gamma Ray Burst==
The gamma ray burst did not have significant meta reasons for happening, apart from it being
==Ice Comet==
The ice comet which struck at the beginning of
==Ice Age and Snowball Event==
The ice age and snowball event partially served to wipe out implausible organisms. As long as members were not allowed to evolve from them, the massive grind of habitat loss--which ultimately completely turned over all biomes apart from some tundra in Darwin and Drake--could therefore take out the vast majority of implausible organisms.
As part of this,
=Beta=
The Beta timeline, being much younger than Alpha, has had fewer extinction events.
==Coronal Mass Ejection==
The coronal mass ejection was a reimagined version of Alpha's first mass extinction event, where the planet's magnetic field was compromised by an event far more powerful than a solar flare. All extinction results were also re-rolled, resulting in slightly more survivors--but they were heavily biased in favor of microbes and binucleids, with more binucleids surviving than in Alpha and the only other multicellular life to make it through being Carpotesta Luceremundere. This change defined Beta's early ecosystems, which became completely dominated by worms and crystal flora.
==End-Binucleozoic Atmospheric Disturbance (EBAD)==
Although the drop in oxygen levels was the inevitable result of increasing volcanism, the sheer destructive power of EBAD was directly caused by the early dominance of crystal flora on land, which resulted in significant amounts of previously-bioavailable nitrogen becoming locked away in chitinous flora which did not rot before being buried. This ultimately disrupted the nitrogen cycle and caused a mass extinction of flora, as well as taking out all megafaunal worms--even ones with unidirectional lungs which could have otherwise survived the dip in oxygen unscathed. Most non-binucleid flora and fauna were too small to be affected, even those much bigger than the largest surviving binucleids, resulting in a significant faunal ''and'' floral turnover.
=Mason=
[[Category:Meta]]
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