diff --git a/EnsSci/02_Biodiversite_et_evolution/1B.tex b/EnsSci/02_Biodiversite_et_evolution/1B.tex
new file mode 100644
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+\documentclass[a4paper,10pt]{article}
+\usepackage{myXsim}
+
+\author{Benjamin Bertrand}
+\title{Biodiversité et évolution - Cours}
+\date{août 2020}
+
+\pagestyle{empty}
+
+\begin{document}
+
+\maketitle
+
+\end{document}
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diff --git a/EnsSci/02_Biodiversite_et_evolution/1E.tex b/EnsSci/02_Biodiversite_et_evolution/1E.tex
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+++ b/EnsSci/02_Biodiversite_et_evolution/1E.tex
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+\documentclass[a4paper,10pt]{article}
+\usepackage{myXsim}
+
+\author{Benjamin Bertrand}
+\title{Biodiversité et évolution - Cours}
+\date{août 2020}
+
+\DeclareExerciseCollection{banque}
+\xsimsetup{
+    step=1,
+}
+
+\begin{document}
+
+\input{exercises.tex}
+\printcollection{banque}
+
+\end{document}
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diff --git a/EnsSci/02_Biodiversite_et_evolution/exercises.tex b/EnsSci/02_Biodiversite_et_evolution/exercises.tex
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+++ b/EnsSci/02_Biodiversite_et_evolution/exercises.tex
@@ -0,0 +1,10 @@
+\collectexercises{banque}
+\begin{exercise}[subtitle={<++>}, step={1}, origin={<++>}, topics={Biodiversité et évolution}, tags={Échantillonnage, Statistique}]
+    <++>
+\end{exercise}
+
+\begin{solution}
+    <++>
+\end{solution}
+
+\collectexercisesstop{banque}
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diff --git a/EnsSci/02_Biodiversite_et_evolution/index.rst b/EnsSci/02_Biodiversite_et_evolution/index.rst
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+Biodiversité et évolution
+#########################
+
+:date: 2020-08-27
+:modified: 2020-08-27
+:authors: Benjamin Bertrand
+:tags: Échantillonnage, Statistique
+:category: EnsSci
+:summary: Estimer un population, Modèle génétique
+
+Étape 1:
+========
\ No newline at end of file