A set of more than 450 flash cards presents the most commonly-tested terms and topics on the AP Environmental Science exam with explanations on the reverse side of each card. All AP test topics are covered in the set. This second edition contains new diagrams and illustrations as well. The cards measure 4 1/2" x 2 3/4" and have a punch-hole in one corner that accommodates an enclosed metal key-ring-style card holder. The ring allows students to arrange the flash cards in any sequence that suits their study needs. A valuable study aid, whether used alone or in tandem with <i>Barron's AP Environmental Science</i> test prep manual. <B>BONUS! An exclusive online exam included with the purchase of the flash cards.</B>