Oceanography Study Guide Sample Pages

Barrier Reef formation From 50 mya to present a series of ice ages engulfed the earth during this period. When an ice age occurs, vast amounts of water become trapped in the polar ice caps and the depth of the ocean decreases. Ice age Earth By Ittiz (Own work) [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0 )], via Wikimedia Commons, modified by Bob Moffatt under Wiki licence 2.0. Page 88 2018 TRIAL EDITION Copyright Wet Paper Publications Sam ple page