20 Mass Extinctions (go Over) Flashcards
1
Q
Why do extinctions occur
A
When the environment of a species changes faster than the species can adapt
2
Q
Evidence for asteroid extinction
A
Spike in iridium at the time
Quarts grains show schocked quarts suggesting impact
3
Q
Can we avoid extinction ?
A
Fire asteroid into incoming asteroid
4
Q
What is a multi planet species?
A
Settle other planets
