Question: Q: What element can form two different compounds with oxygen? Choices: - dioxide - H20 - hydrogen - carbon A:
Answer: carbon

Question: Q: The three segments of arthropods are the head, thorax and what? Choices: - chest - antennae - appendages - abdomen A:
Answer: abdomen

Question: Q: The fundamental unit of time, the second, is based on what type of clock? Choices: - quantum clock - eternal clock - gravity clock - atomic clock A:
Answer:
atomic clock