diff --git a/Grade 9/Science/SNC1DZ/Unit_3_Biology_Study_Sheet.md b/Grade 9/Science/SNC1DZ/Unit_3_Ecology_Study_Sheet.md
similarity index 99%
rename from Grade 9/Science/SNC1DZ/Unit_3_Biology_Study_Sheet.md
rename to Grade 9/Science/SNC1DZ/Unit_3_Ecology_Study_Sheet.md
index d1d7ad6..b96dbe2 100644
--- a/Grade 9/Science/SNC1DZ/Unit_3_Biology_Study_Sheet.md	
+++ b/Grade 9/Science/SNC1DZ/Unit_3_Ecology_Study_Sheet.md	
@@ -1,4 +1,4 @@
-# Unit 3: Biology
+# Unit 3: Ecology
 
 ## Terms
 - `Habitat`: Place where organisms live