Question: Q: What type of tissues are major barriers to the entry of pathogens into the body? Choices: - skin - vascular - nasal - mucosal A:
Answer: mucosal

Question: Q: The structure of the human tail bone is called what? Choices: - a abnormal structure - a vital structure - an artifact - a vestigial structure A:
Answer: a vestigial structure

Question: Q: What is the name for the cooler, darker areas on the sun's surface? Choices: - corona - aurora borealis - anomalies - sunspots A:
Answer:
sunspots