Answer the following question: Fact 1: Echinoderms have a unique water vascular system with tube feet. Fact 2: Starfish and sea urchins are also echinoderms. Given the two facts above, answer the question "what have a unique water vascular system with tube feet?" with the following options: - h2o - insects - sea urchins - bushes - Most plants - Conifers - orchids - humans
Answer:
sea urchins