1. Essential Question: How did whales change over time
Essential Question: How did whales change over time? Investigation Question: How do anatomical and embryological structures show common ancestry to land animals?
Investigation 2 Claim:
There are clues in whales physical structure to show they are related to land animals. Anatomical, homologous and vestigial structures are physical examples of common ancestry to land animals. The adaptations acquired over time are preserved in the animals embryology.
Terms: Embryology, Homologous Structures, Vestigial Structures, Adaptation

2. How do anatomical and embryological structures show common ancestry to land animals?
Figure 2.1
Claim 1
Write a claim that addresses how homologous structures show that whales are related to land animals?
Terms: Homologous Structures, Adaptations

3. How do anatomical and embryological structures show common ancestry to land animals?
Figure 2.2
Claim 2
Write a claim that addresses how vestigial structures show that whales have a common ancestor to land animals?
Terms: Vestigial structures, Adaptation

4. Write a claim that addresses how embryology show that whales had legs?
How do anatomical and embryological structures show common ancestry to land animals?
Figure 2.3
Claim 3
Write a claim that addresses how embryology show that whales had legs?
Terms: Embryology, Adaptations
Dolphin Embryos