16. It is a possible answer to a question or it is a scientific guess. *
A.Hypothesis
B.Prediction
C.Observation
D.Inference
17. An explanation of an observation * A.Experimentation
B.Classification
C.Prediction
D.Inference
18. Testing a hypothesis through the manipulation and control of independent variables and noting the effects on a dependent variable *
A.Hypothesis
B.Experimenting
C.Measuring
D.Analyzing ​