DDT+Case+Study+Homework

Gather information from secondary sources to identify a pesticide (best to use DDT) whose use is now banned and summarise


 * its use,
 * the reasons for stopping its use and
 * **assess** (make a judgement based on evidence) the impact of its residual chemicals in the environment

when assessing the impact of residual DDT chemicals in the environment look at
 * how long lived DDT is (takes a long time to break down)
 * the wide range of organisms DDT is toxic to
 * Dangers to humans
 * Danger of DDT entering waterways
 * Effect of bio accumulation and biomagnification of DDT