Examlex
After cheering wildly at an exciting football game your body may begin to relax on the way home. This relaxation reflects activity of the ____ nervous system.
Hypothesis
A hypothesis is a proposed explanation made on the basis of limited evidence as a starting point for further investigation.
Variable
An element, feature, or factor that is liable to vary or change.
Scientific Method
is a systematic approach to research and experimentation used to explore observations and answer questions by making hypotheses and testing them.
Theory
A system of ideas intended to explain something, often based on general principles independent of the thing to be explained.
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