You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Q: Category: "E" BAY 
Clue: Thinking green, biologist Ernst Haeckel coined this term for the way animals interact with the environment

A: ecology
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Q: Category: AND SOMETIMES Y 
Clue: A people got this name, now also used for a type of taxicab, from the mistaken belief that they came from Egypt

A: gypsy
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Q: Category: BOTANY 
Clue: Cloth-of-gold & saffron are species of this hardy perennial in the iris family

A:
crocus
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