It seems that you are referring to a transcript or script from a video or audio source discussing Darwin's phylogenetic tree and the evolution of life. However, without access to the specific material or context, I'm unable to fill in the blanks accurately.
If you provide the specific terms or context you need for those blanks, I might be able to help you better. Otherwise, typical phrases to fill in might be:
- "all living organisms" and "common ancestor"
- "species"
Let me know how else I can assist you!