A well-substantiated explanation of some aspect the natural world, based on a body of facts that have been repeatedly confirmed through observations and experiments, is referred to as a(n) ________.
A. hypothesis
B. theory
C. fact
D. idea
Answer: B
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__________, such as jellyfishes, corals, and sea anemones, are radially symmetrical. Fill in the blank(s) with the appropriate word(s)
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