Question: Q: What is the tail bone an example of? Choices: - invertebrate structure - parasitic structure - primordial structure - vestigial structure A:
Answer: vestigial structure

Question: Q: What is the process by which undigested food leaves the body? Choices: - glycolysis - digestion - peristalsis - egestion A:
Answer: egestion

Question: Q: What is a hydrocarbon in which there are only single covalent bonds? Choices: - combined - proline - fullerene - alkane A:
Answer:
alkane