B15.6-7

Question 1

What three things can we learn from fossils ?

Answer 1

1. To identify features past organisms may of had
2. To make evolutionary links between past and present species
3. To understand what the environment may have previously been like

Question 2

What is extinction ?

Answer 2

When individuals of a species no longer exist, no remaining individuals exist

Question 3

What are the five reasons for extinction?

Answer 3

1. Natural disaster/ catastrophic event
2. Disease
3. Climate change
4. Predator
5. Invasive species