Many kinds of sports include a variety muscles. Soccer, tennis, and basketball for example
Answer: The answer is variable.
Explanation: Scientists may do a start out hypothesis on the info they have. But if something changes in that experiment, it is the Variable.
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A vaccination can produce immunity to smallpox
B). Using improper body piercing methods
Using improper piercing (and tattooing) methods can lead to serious infection along with not taking proper care of the pierced area.
