Which best determines the number of wolves that can live in an area? OPTIONS:
- the amount of snow in the area each year
- the number of birds that live in the area
- the number of trees in the area
- the amount of food available in the area
A: the amount of food available in the area

In an investigation, which of these procedures is most important in reaching a conclusion? OPTIONS:
- classifying and sequencing methods
- evaluating and interpreting data
- developing multiple hypotheses
- predicting the most likely outcome
A: evaluating and interpreting data

The movement of an air mass over Earth's surface causes OPTIONS:
- earthquake activity
- local weather changes
- global warming
- ecological succession
A: local weather changes

Which characteristic of the asthenosphere helps explain the evidence of crustal-plate motion? OPTIONS:
- the magnetic properties
- the semiliquid physical state
- the ability to deflect solar winds
- the ability to absorb heat energy
A:
the semiliquid physical state