earth science
US /ɜːrθ ˈsaɪəns/
UK /ɜːrθ ˈsaɪəns/
1.
the scientific study of the Earth and its various systems, including geology, oceanography, meteorology, and astronomy
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She decided to major in earth science because of her interest in volcanoes.
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The earth science class went on a field trip to study rock formations.