Please enable JavaScript.
Coggle requires JavaScript to display documents.
Permian Extinction - Coggle Diagram
Permian Extinction
The Great Dying
95–96% of marine species died
70% of land species died
biggest extinction in Earth history
Time: 252 million years ago
volcanic eruptions (Siberian Traps)
lava and ash released
ash blocked sunlight
temperatures became colder at first
greenhouse gases released
CO2 increased
global warming increased
temperatures rose by about 5°C
methane gas released from oceans
Earth became even hotter
climate change
extreme heat spread across Earth
habitats were destroyed
many species could not survive
droughts increased
plants began dying
land ecosystems weakened
ocean problems
oceans became warmer
oxygen levels dropped
marine life suffocated
oceans became acidic
coral reefs died
many sea animals disappeared
food chain collapse
plants died
herbivores lost food
carnivores lost prey
food chains collapsed
recovery of life
Earth slowly stabilized
new ecosystems formed
new species evolved
early dinosaurs appeared
sedimentary rocks
scientists study rock layers
red rocks show dry conditions
greenish rocks show wetter conditions
rock layers help explain what happened over time