I want to know the answer to the following question:
What percentage of potentially habitable modes have Tetrapods not yet invaded?
All the background I'm provided with is that "As one author states, "Tetrapods have not yet invaded 64 per cent of potentially habitable modes, and it could be that without human influence the ecological and taxonomic diversity of tetrapods would continue to increase in an exponential fashion until most or all of the available ecospace is filled."". Is that enough to answer the question?
Answer: yes