1. if people are all the same species, then
how come we’re all so different?

2. ?
Variation is... ?
?
?
?
?
?
?
?
?
?
?

3. Variation is...
........the differences between individuals, either of
the same species or from different species...

4. Genetic
Not Confident Confident
Environmental

5. Making Notes
• Variation
• Causes of variation
• Confidence in the Causes
• anything else?

6. next lesson: why are twins used in
variation studies?