What is extinction? What evidence do we have that some species have become extinct? What are some factors that can lead to extinction events? Why would they potentially lead to extinction events?
Extinction is when all members of a species has died.
Answer:
Evidence: Five major mass extinctions of each era, movement of Earth, impact theory.
Factors: Habitat loss, introduction to new diseases/ predators, small population size, rapid environmental change
These would lead to extinction events because they fail to match the pace of environmental change.