Write an inquisitive question about a specific text span in a given sentence such that the answer is not in the text.
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Question: Sentence: Like Darwin ' s finches or Great Britain ' s peppered moths , these hedgehogs of the sea increasingly embody nature ' s stunning capacity for resilience .<sep>Span: hedgehogs of the sea

Answer: Why are sea urchins known as hedgehogs of the sea?

Question: Sentence: The problem has gotten so bad that Canine Companions for Independence the nation ' s largest breeding and training service - dog program launched an online petition last week asking the U . S . Department of Justice to take action .<sep>Span: Canine Companions for Independence

Answer: How many members does Canine Companions for Independce have?

Question: Sentence: The new numbers show what was behind the growth in each state : more babies , more immigrants or more newcomers from other states .<sep>Span: other states .

Answer:
Which other states?