Oceanography Study Guide Sample Pages

Freshwater species Water invertebrates vary in their ability to withstand pollution levels. Caddisfly biotic indicator - a macroinvertebrate used as an indicator of water quality By Bruce Marlin - Own work http://www.cirrusimage.com/Trichoptera_caddisfly.htm , CC BY-SA 2.5, https://commons.wikimedia.org/w/index.php?curid=664241 Page 838 2018 TRIAL EDITION Copyright Wet Paper Publications Sam ple page