evidence of evolution from fossils Flashcards
1
Q
three ways fossils can form?
A
if an organism has not decayed, parts of organism is replaced via minerals, preserved traces
2
Q
conditions for a fossil?
A
too cold, not enough oxygen, not enough water
3
Q
problems with fossils?
A
soft formed organisms, some have been destroyed by earths crust
4
Q
reasons species become extinct?
A
catastrophic event, environment changing, new disease or new predator, new more successful species
