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À quoi ressemblait l’ancêtre d’Homo sapiens ?

Pour la première fois, deux paléoanthropologues ont remonté l’arbre généalogique de notre espèce et dressé le portrait-robot en 3D de l’ancêtre d’Homo sapiens. Ils ont comparé ce crâne virtuel aux

Au jour le jour

Rentrée 2019

Excellente rentrée 2019 à tous ! Retrouvez les infos SVT tout au long de l’année sur la page VivelesSVT & sur le compte Twitter VivelesSVT. N’oublions pas les articles du

Actu-sciences

Cartographie complète d’un cerveau

Grâce à la microscopie électronique, une équipe vient pour la première fois de dresser la carte exhaustive en 3D des cellules nerveuses du cerveau d’un animal, le petit ver Caenorhabditis

Collège

Sujet de SVT au brevet des collèges

Télécharger le sujet en format PDF

Lycée

Epreuves anticipées Sciences 2019 – Métropole

Découvrez le sujet des épreuves anticipées de sciences de métropole en 2019 – Télécharger le sujet en PDF

4ème

La nutrition chez les végétaux

Comment les végétaux chlorophylliens font-ils pour produire de la matière ? I – Le prélèvement de la matière dans l’atmosphère TP : observation de stomates d’iris au microscope optique Les

Actu-sciences

Niveau des nappes d’eau souterraine au 1er mai

Le niveau des nappes est en baisse sur l’ensemble de la France. Les pluies d’avril ont permis de prolonger la recharge localement mais la situation n’est pas très satisfaisante pour

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