diff --git a/Grade 9/Science/SNC1DZ/Unit_3_Biology_Study_Sheet.md b/Grade 9/Science/SNC1DZ/Unit_3_Biology_Study_Sheet.md
index 67569f3..0f75374 100644
--- a/Grade 9/Science/SNC1DZ/Unit_3_Biology_Study_Sheet.md	
+++ b/Grade 9/Science/SNC1DZ/Unit_3_Biology_Study_Sheet.md	
@@ -110,7 +110,7 @@
     - Must get our food from plants.
 - Plants are the first step in the food chain.
 - Oxygen released during photosynthesis is necessary for all living things.
-- 6CO<sup>2</sup> + 6H<sup>2</sup>O = C<sup>6</sup>H<sup>12</sup>O<sup>6</sup> + 6<sup>O<sup>2</sup>
+- 6CO<sub>2</sub> + 6H<sub>2</sub>O = C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> + 6O<sub>2</sub>
 - Carbon Dioxide + Water & Light energy =  Sugar + Oxygen. 
 - The energy are stored in the plants stems, leaves, roots and seeds.