What is the common name of the group whose members are characterized by endoskeleton and a unique water vascular system? A. tunicates B. medusas C. echinodermes D. brachiopods Plz Help .-.
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Performing well on an Advanced Placement (AP) exam can earn you an affordable form of college credit. Find out if you qualify for an AP exam fee waiver to further reduce the costs associated with credit by examination and learn about review courses designed to help you study. Getting an AP Exam Fee Waiver Students who meet the qualifications listed below can receive a fee waiver for their AP exams, which cost $92 per test in the United States, as of November 2015. To get the waiver, students should talk to their school's AP coordinator, who is responsible for determining which students qualify for waivers and requesting exams at a reduced rate when ordering the tests.