*Question*
Q: What precious resource allows us to grow food as well as materials we turn into clothing and medicine? Choices: - petroleum - mercury - gasoline - soil A:
**Answer**
soil

*Question*
Q: Isotopes have different number of these in their nuclei? Choices: - protons - electrons - atoms - neutrons A:
**Answer**
neutrons

*Question*
Q: Like a house, your body has what kind of mechanism that responds to changes in temperature? Choices: - external thermostat - mechanical thermostat - sensitive thermostat - internal thermostat A:
**Answer**
internal thermostat

*Question*
Q: What consequence of a tornado is responsible for most injuries and deaths? Choices: - catching debris - touring debris - falling debris - flying debris A:
**Answer**
flying debris