Question: Q: What is a layer of tissue that lies between the shell and the body? A:
OPTIONS:
- stem
- silt
- node
- mantle
Answer: mantle

Question: Q: What is the theory scientists use to explain the matter in the universe and how it's held together? A:
OPTIONS:
- specific model
- original model
- organic model
- standard model
Answer: standard model

Question: Q: Which group of the periodic table consists of hydrogen and the alkali metals? A:
OPTIONS:
- group 2
- group 4
- group 3
- group 1
Answer:
group 1