L’atmosfera terrestre è composta per il 78% di azoto e il 21% di ossigeno, una miscela unica nel sistema solare. L’ossigeno è stato prodotto da alcuni dei primi organismi viventi. Ma da dove viene l’azoto? È fuggito dal mantello terrestre attraverso l’attività vulcanica?
Le forze di natura astronomica come le maree solide svolgono un ruolo attivo sulla tettonica delle placche: è quanto affermano i risultati di una ricerca frutto della collaborazione fra l’Università Sapienza di Roma, l’ASI e l’INGV
Ore 12:41 – L’Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Etneo, comunica che dalla rete di telecamere di sorveglianza, a …
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