Go to:  https://apclassroom.collegeboard.org/d/2abo2rrr3a?sui=14,8  to watch Topic 8.12 Daily Video 1 which will define lethal dose 50%, then explain how LD50 differs between substances.

Take notes on this video and summarize important key points.  Focus your notes not just on content, but also how you are going to demonstrate you mastery of the content using science practices.  Be sure to answer and questions that are asked when you pause the video.  Check your answers!