tadpole2 (IMAGE) University of Wisconsin-Madison Caption Wood frog tadpoles like this one are more susceptible to a parasitic fluke when they live in water tainted by road salt. But when their polluted ecosystem includes other species, like the American toad, which are not more likely to be infected in saltier water, biodiversity works in all the tadpoles’ favor. Credit Jessica Hua Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.