This extinction hit marine life hard, especially organisms living in shallow seas. The leading explanation centers on glaciation over Gondwana, falling sea levels, and disrupted ocean habitats. As seas withdrew, vast marine ecosystems collapsed, clearing space for new evolutionary paths in the Silurian.
Wisdom Builder
Three Tidbit Stories
MODE:
4. Math Theory.
3 random tidbit stories in about 3 minutes.
Idea 1.
A 4. Math Theory Story.
~444 Million Years Ago
Cause: Global Cooling and Falling Seas
I wrote that 4. Math Theory Story,
and posted it to TST 7 months ago.
Idea 2.
A 4. Math Theory Story.
circa 20 million years ago
Phenotype Variations
Blood type variations originated from common primate ancestors around 20 million years ago. While blood transfusions between species, such as between apes and humans, are not viable due to different and incompatible blood antigens, the development of blood type systems, including types similar to the human A, B, AB, and O, can be traced back to these early ancestors.
This evolutionary milestone, involving the presence or absence of specific antigens on red blood cells, provided a crucial adaptive advantage against various pathogens. As primates branched out and occupied diverse ecological niches across continents, these genetic variations became instrumental in their survival. This trait underscores the evolutionary processes that contribute to the vast genetic diversity seen across primates, including humans, demonstrating how adaptations to local environmental pressures can drive evolutionary change across millions of years.
I wrote that 4. Math Theory Story,
and posted it to TST 3 years ago.
Idea 3.
A 4. Math Theory Story.
13.8 Billion Years Ago: First Millisecond
A bit speculative. Still an irrational idea rationally deduced but with some empirical data.
We are still within the speculative first second. Following inflation, the universe continued to expand and cool. During the Electroweak Era, the electromagnetic and weak nuclear forces still behaved as one electroweak force. As the universe cooled further, that unity broke: electromagnetism and the weak force separated into the distinct forces we know today.
This was still a hot, dense world of particles forming and annihilating almost instantly. Nothing like atoms existed yet. Even protons and neutrons were not stable structures at this point. But the stage was being set. As cooling continued, quarks would later bind together, making the formation of more stable particles possible.
A bit speculative. This era is grounded in well-established physical theories and supported by high-energy particle physics, including experiments that test pieces of the electroweak model and recreate conditions analogous to the early universe.
I wrote that 4. Math Theory Story,
and posted it to TST 3 years ago.