Q: What thin layer of air acts as a barrier to prevent cool air from mixing with warm air in the stratosphere? A:
OPTIONS:
- methosphere
- endosphere
- liposphere
- tropopause
tropopause

Q: The environment where most chemical reactions in organisms takes place consists mostly of what? A:
OPTIONS:
- air
- sodium
- helium
- water

Answer: water

Question: Q: What type of maps detail detail the types and locations of rocks found in an area? A:
OPTIONS:
- contour maps
- polar maps
- gnomic maps
- geologic maps
Answer: geologic maps

input with options: Q: What takes place when water on earth's surface changes to water vapor? A:
OPTIONS:
- condensation
- transpiration
- absorption
- evaporation
output: evaporation

Q: Q: Ionic compound atoms of various elements gain or lose electrons to? A:

OPTIONS:
- become ions
- expel ions
- flatten ions
- produce ions

A: produce ions

Q: What tissue do clubmosses have that mosses do not? A:
OPTIONS:
- dioxide tissue
- nuclei
- chorophyll
- vascular tissue
vascular tissue