Question: Answer the following question given this paragraph: Carbon can form two different compounds with oxygen. Q: What element can form two different compounds with oxygen? A:
OPTIONS:
- dioxide
- H20
- hydrogen
- carbon
Answer: carbon

Question: Answer the following question given this paragraph: Most arthropods have three body segments. The segments are the head, thorax, and abdomen. You can see the three segments in a range of arthropods in Figure below . In some arthropods, the head and thorax are joined together. Q: The three segments of arthropods are the head, thorax and what? A:
OPTIONS:
- chest
- antennae
- appendages
- abdomen
Answer: abdomen

Question: Answer the following question given this paragraph: Figure 1.18 An atomic clock such as this one uses the vibrations of cesium atoms to keep time to a precision of better than a microsecond per year. The fundamental unit of time, the second, is based on such clocks. This image is looking down from the top of an atomic fountain nearly 30 feet tall! (credit: Steve Jurvetson/Flickr). Q: The fundamental unit of time, the second, is based on what type of clock? A:
OPTIONS:
- quantum clock
- eternal clock
- gravity clock
- atomic clock
Answer:
atomic clock