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.
Travelers from the VWP countries seeking to enter the United States will also be required to have in their possession a machine-readable passport. For Passport requirements for Visa Waiver Program applicants, visit the U.S. Customs and Border Protection website.