diff --git a/docs/development/03biomaterial.md b/docs/development/03biomaterial.md
index 1e9a11057cb74c5d2987e54c14ccccd9547361b3..aa8c42ec9f5d1d8463875d81ffb9d48cf2539330 100644
--- a/docs/development/03biomaterial.md
+++ b/docs/development/03biomaterial.md
@@ -7,10 +7,6 @@
 
 ## **GELATIN**
 
-## **STARCH**
-
-## **AGAR**
-
 ## **PAPER**
 
 **In this video, Cory Morrison demonstrates how to make paper from grass, which helps me with making paper from flower waste.**