Question: Q: Arteries and veins are two of the three types of blood vessels, what is the third?   A:
Answer: capillaries

Question: Q: What relatively new addition to and highest level of the system of taxonomic classification includes just three divisions, the eukarya, the archaea, and the bacteria?   A:
Answer: domain

Question: Q: What is the simplest form of matter that has a unique set of properties?   A:
Answer:
element