TASK DEFINITION: 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.
PROBLEM: Category: MAGAZINES ON THE WEB 
Clue: The website for this defunct mag has the "most amazing collection of professional photography on the Web"

SOLUTION: life

PROBLEM: Category: GENERAL SCIENCE 
Clue: A horse's hooves are made up of this protein, the same protein found in your fingernails

SOLUTION: keratin

PROBLEM: Category: ANIMAL RHYME TIME 
Clue: The $1.99 lamb as opposed to the $19.99 one

SOLUTION:
cheap sheep