In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Question: What purpose does the appendix serve in humans today? Answer: none
None purpose does the appendix serve in humans today.

Question: What are a class of tetrapod vertebrates that produce amniotic eggs called? Answer: reptiles
Reptiles are a class of tetrapod vertebrates that produce amniotic eggs called.

Question: Each species has a particular way of making a living which is called its what? Answer: niche

Each species has a particular way of making a living, which is called its niche.