Answer:
See Below
Step-by-step explanation:
Dr. Clack believed that the previously known story about tetrapods was implausible. Dr. Clack ended up going to Greenland to find out more about tetrapods, in Greenland she found one of the earliest known tetrapods; the Acanthostega. Acanthostega were aquatic creatures with fins that ended in tiny fingers. These fingers had bones as well. Dr. Clack learned that fish actually evolved in water before walking on land.
I ended up writing 5 sentences instead of 4, I hope that is ok.
- Finn :)