diff --git a/.obsidian/appearance.json b/.obsidian/appearance.json
index 93ba13b..edef6bc 100644
--- a/.obsidian/appearance.json
+++ b/.obsidian/appearance.json
@@ -1,4 +1,5 @@
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+  "showRibbon": true
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diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 9222553..befdcdf 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -27,16 +27,30 @@
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-                "file": "Mechanism of Microevolution.md",
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                 "mode": "source",
                 "source": false
               },
               "icon": "lucide-file",
-              "title": "Mechanism of Microevolution"
+              "title": "3 Classification of Prokaryotes"
+            }
+          },
+          {
+            "id": "136ee6d3f808ec2c",
+            "type": "leaf",
+            "state": {
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+              "state": {
+                "file": "biology/G11 Pre-AP Biology/Unit 1 Diversity of Living Things/9 Plants.md",
+                "mode": "source",
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+              "title": "9 Plants"
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+    "Excalidraw/Drawing 2026-09-15 10.42.31.excalidraw.md",
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diff --git a/Pasted image 20261113110619.png b/Pasted image 20261113110619.png
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diff --git a/Mechanism of Microevolution.md b/biology/G11 Pre-AP Biology/Unit 3 TBD/Mechanism of Microevolution.md
similarity index 100%
rename from Mechanism of Microevolution.md
rename to biology/G11 Pre-AP Biology/Unit 3 TBD/Mechanism of Microevolution.md
diff --git a/biology/G11 Pre-AP Biology/Unit 3 TBD/Patterns of Selection.md b/biology/G11 Pre-AP Biology/Unit 3 TBD/Patterns of Selection.md
new file mode 100644
index 0000000..6807e84
--- /dev/null
+++ b/biology/G11 Pre-AP Biology/Unit 3 TBD/Patterns of Selection.md	
@@ -0,0 +1,17 @@
+[[Unit 3 (TBD)]]
+Natural selection is situational. It requires heritable variation, competition, and selective pressures.
+==Selective pressure== are environmental conditions pressuring traits.
+==Selective advantage== is a genetic advantage.
+
+Sexual selection is mate selection for a particular phenotype. It may affect fitness.
+Females choose their mates.
+Good genes hypothesis: Females choose mates on traits that improve chance of survival.
+Runaway hypothesis: Females choose on basis of traits that improve male appearance.
+Sexual dimorphism: Different characteristics between male and females to the point that they appear to be separate species.
+Intersexual selection: Females choose mates based on appearance/phenotype/behavior.
+Intrasexual selection: Competition between the same sex of same species to pass on DNA.
+
+Stabilizing selection: The intermediate phenotype is favored.
+Directional selection: Favors phenotypes at an extreme of the range, resulting in the curve being shifted towards that extreme.
+Disruptive selection: Both extremes are favored at the same time. Can eliminate the intermediate phenotype, resulting in speciation.
+![[Pasted image 20261113110619.png]]
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