Extinction And Speciation Flashcards
(6 cards)
0
Q
Why do species become extinct?
A
Environment changes (too quickly), new predator kills them all (human killed all the Dodos), a new disease kills them all
1
Q
When does extinction occur?
A
If you can’t evolve quick enough
2
Q
What is speciation?
A
Development of a new species
3
Q
What causes speciation?
A
Isolation and natural selection
4
Q
What is isolation?
A
Where a population of species are separated
5
Q
What causes isolation?
A
Physical barrier, (e.g. Floods and earthquakes can cause barriers that geographically isolate some individuals from the main population
