WWB Trainer
WWB Key Ideas
From Photosynthesis to Forests
MODE:
~
4 minutes
of short abstracts.
10 key ideas.
1.
LECA is the Last Eukaryotic Common Ancestor. LECA reproduced sexually pushing the mixing of DNA back before 1.75 billion years ago.
2.
Before, during, and after the K–Pg extinction: a thriving Late Cretaceous world of dinosaurs, pterosaurs, birds, and flowering plants gives way to the asteroid strike and global collapse that ended the age of non-avian dinosaurs.
3.
The Mesozoic era starts with the end-Permian mass extinction 252 million years ago. Dinosaurs ruled over all, including us. It ends the reign of dinosaurs with the K–Pg extinction 66 million years ago.
4.
About 252 million years ago, needle-like leaves had become a defining adaptation of conifers, enabling survival and expansion in dry environments.
5.
The Permian-Triassic extinction was not just the end of many species. It was a planetary reset that destroyed the old synapsid-dominated world and opened the door for the archosaur line that would later give rise to dinosaurs.
6.
Archaea are a primary branch of early life, and eukaryotes emerged from within this archaeal lineage.
7.
A lineage can survive for hundreds of millions of years while remaining morphologically recognizable. Living fossil is poetic, but scientifically the ginkgo represents a relict lineage and a morphologically conservative lineage.
8.
The Cenozoic era starts with the K–Pg extinction 66 million years ago. That event marks the sudden end of the reign of dinosaurs and the rise of mammals and birds.
9.
Flowers evolved 130 million years ago, transforming seed-plant reproduction by enclosing ovules.
10.
Red algae did not descend from green algae. Both lineages split from a shared ancestor about 1.5 billion years ago, then adapted independently to different light environments.
Done. Refresh for another set.
WWB Trainer
(c) 2025-2026 TouchstoneTruth.
Writing and coding by Michael Alan Prestwood.
(c) 2025-2026 TouchstoneTruth.
Writing and coding by Michael Alan Prestwood.
