instruction:
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.
question:
Category: BIRDS 
Clue: The "snowy" type of this member of the heron family is known for its beautiful white plumes
answer:
an egret


question:
Category: THE ENVIRONMENT 
Clue: This word means catching an unsustainably high number of tuna & cod
answer:
overfishing


question:
Category: BACKWORDS 
Clue: A messenger is reviled when he fails to do this
answer:

deliver/reviled