1. Charles Darwin sailed around the world on the HMS _____________.
2. What is natural selection?
3. What was the name of the book published by Darwin?
4. According to Darwin, evolution by natural selection is a slow or fast process?
5. All of the __________ collected by Darwin had evolved from a single species of bird from ___________ ______________ that had been blown off course and had to adapt to the various Galapagos habitats.