Conducting a fair test is one of the most important ingredients of doing good, scientifically valuable experiments. To insure that your experiment is a fair test, you must change only one factor at a time while keeping all other conditions the same. Scientists call the changing factors in an experiment variables.
Eligibility Requirements for VFW Auxiliary Membership: Members must be citizens of the United States or a United States National, and at least 16 years old.
Minimum Requirements. 1  U.S. citizenship (or application) 2  Must be at least 21 years old. 3  U.S. high school diploma/GED. 4  Good physical condition. 5  No felony convictions. 6  Eligible to own/possess a firearm.