The term "text" has multiple meanings depending on its context of use:
In language, text is a broad term for something that contains words to express something.
In linguistics a text is a communicative act, fulfilling the seven constitutive and the three regulative principles of textuality. Both speech and written language, or language in other media can be seen as a text within linguistics.
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Biodiversity - editor E.O. Wilson, 1988 - Calls attention to the rapidly accelerating loss of plant and animal species to increasing human population pressure and the demands of economic development. Biodiversity creates a systematic framework for analyzing the problem and searching for possible solutions. Online book from National Academic Press.
Biodiversity and Conservation - A Hypertext Book by Peter J. Bryant, School of Biological Sciences, University of California, Irvine. The origin, nature and value of biological diversity, the threats to its continued existence, and approaches to preserving what is left.
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