Linguistics is the scientific study of language, and involves an analysis of language form, language meaning, and language in context. The earliest activities in the documentation and description of language have been attributed to the 6th century BC Indian grammarian Pāṇini, who wrote a formal description of the Sanskrit language in his Aṣṭādhyāyī.
To EU-funded Earth scientists, it is evident that many parts of the Earth's crust have been extracted from the underlying mantle. However, the timing of new crust formation and recycling of old crust has proven to be an elusive issue.
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