In this article we will discuss about:- 1. Definition of Ecotoxicology 2. Ecotoxicological Episodes 3. Scientific Approach 4. Entry, Movement and Fate of Pollutants in Ecosystems. Definition of Ecotoxicology: Ecotoxicology can be defined as “the study of harmful effects of chemicals upon ecosystems”. This implies that ecotoxicology is concerned not only with the detections of […]