diff --git a/2nd/02_Information_chiffree_1/4E_tout_ensemble_dur.pdf b/2nd/02_Information_chiffree_1/4E_tout_ensemble_dur.pdf
new file mode 100644
index 0000000..af15856
Binary files /dev/null and b/2nd/02_Information_chiffree_1/4E_tout_ensemble_dur.pdf differ
diff --git a/EnseignementsScientifique/01_Evolution_et_démographie/1B_modeles.pdf b/EnseignementsScientifique/01_Evolution_et_démographie/1B_modeles.pdf
index 5d12034..6795447 100644
Binary files a/EnseignementsScientifique/01_Evolution_et_démographie/1B_modeles.pdf and b/EnseignementsScientifique/01_Evolution_et_démographie/1B_modeles.pdf differ