Cargando...
¿Qué puedo hacer?
Encuentra
visualización
Obsidian is basically “unpopped” pumice: obsidian and pumice are igneous rocks that are made out of the same material, but because of the way it’s formed inside the volcano, pumice looks very differen ...
Hipervinculo Ciencias de la Tierra y Medioambiente
Obsidian is hard and sharp. Humans used obsidian to make sharp and sturdy tools.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
Añadir a Didactalia Arrastra el botón a la barra de marcadores del navegador y comparte tus contenidos preferidos. Más info...
