Save our Manatees Biotic and Abiotic Elements SC.7.L.17.1 Lesson is great for teaching middle school science, characteristics of biotic and abiotic elements, the effects of each on marine life and ecosystem, and MUCH MORE! Prefer PDF Format? Click HERE! Lesson Includes: Biotic and Abiotic Elements characteristics, definitions, and identificationThe effect of abiotic and biotic elements on marine life - Florida Manatees The effect of abiotic and biotic elements on the ecosystem - Red Tide Extens