Which component of Earth's geology has helped to shield the Earth's atmosphere from energetic particles of solar wind from the Sun which would have gradually stripped it away into space?

Question

Quizplus · Accepted Answer

Global magnetism, specifically the Earth's magnetic field, has helped to shield the atmosphere from the solar wind. The magnetic field deflects the charged particles away from the atmosphere, preventing them from stripping away its gases. Volcanism and seismic activity can have local impacts on the atmosphere, but they do not provide global protection. Plate tectonics also do not protect the atmosphere from solar wind.

Which Component of Earth's Geology Has Helped to Shield the Earth's