Anonymous ID: 14fa94 Dec. 30, 2020, 8:19 p.m. No.12246430   🗄️.is 🔗kun   >>6918

Plate tectonics:

Plate tectonics is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of Earth's lithosphere, since tectonic processes began on Earth between 3.3 and 3.5 billion years ago.