Across
- 4. an argument that uses CER
- 6. a person that answers questions about the natural world
- 7. the variable you alter or mess with
- 10. the variable that has to stay the same
Down
- 1. able to vary or subject to change
- 2. the variable you observe or measure
- 3. a series of steps used when testing scientific questions
- 5. the study of the natural world
- 8. the group that receives the treatment
- 9. the group that doesn’t receive the treatment