https://bio.libretexts.org/Bookshelves/Botany/Introduction_to_Botany_(Shipunov)/04%3A_Multicellularity_the_Cell_Cycle__the_Life_Cycle
4: Multicellularity, the Cell Cycle & the Life Cycle - Biology LibreTexts
the cell cyclemulticellularitylifebiologylibretexts
https://santafe.edu/news-center/news/snowball-earth-and-the-rise-of-multicellularity
Snowball Earth and the rise of multicellularity | Santa Fe Institute
For a billion years, single-celled eukaryotes ruled the planet. Then around 700 million years ago during Snowball Earth — a geologic era when glaciers may have...
santa fe institutesnowball earththe risemulticellularity