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  2. English grammar - Wikipedia

    en.wikipedia.org/wiki/English_grammar

    A Grammar of the English Language, In a Series of Letters: Intended for the Use of Schools and of Young Persons in General, but more especially for the use of Soldiers, Sailors, Apprentices, and Plough-Boys. New York and Chicago: A. S. Barnes and Company. Cobbett, William (2003) [1818]. A Grammar of the English Language (Oxford Language ...

  3. List of typographical symbols and punctuation marks

    en.wikipedia.org/wiki/List_of_typographical...

    Hebrew punctuation – Punctuation conventions of the Hebrew language over time; Glossary of mathematical symbols; Japanese punctuation; Korean punctuation; Ordinal indicator – Character(s) following an ordinal number (used of the style 1st, 2nd, 3rd, 4th or as superscript, 1 st, 2 nd, 3 rd, 4 th or (though not in English) 1º, 2º, 3º, 4º).

  4. Part of speech - Wikipedia

    en.wikipedia.org/wiki/Part_of_speech

    The ancient work on the grammar of the Tamil language, Tolkāppiyam, argued to have been written around 2nd century CE, [8] classifies Tamil words as peyar (பெயர்; noun), vinai (வினை; verb), idai (part of speech which modifies the relationships between verbs and nouns), and uri (word that further qualifies a noun or verb).

  5. Grammar - Wikipedia

    en.wikipedia.org/wiki/Grammar

    A fully revealed grammar, which describes the grammatical constructions of a particular speech type in great detail is called descriptive grammar. This kind of linguistic description contrasts with linguistic prescription , a plan to marginalize some constructions while codifying others, either absolutely or in the framework of a standard ...

  6. Carbon dioxide - Wikipedia

    en.wikipedia.org/wiki/Carbon_dioxide

    Carbon dioxide is the lasing medium in a carbon-dioxide laser, which is one of the earliest type of lasers. Carbon dioxide can be used as a means of controlling the pH of swimming pools, [139] by continuously adding gas to the water, thus keeping the pH from rising. Among the advantages of this is the avoidance of handling (more hazardous) acids.

  7. Grammatical category - Wikipedia

    en.wikipedia.org/wiki/Grammatical_category

    In linguistics, a grammatical category or grammatical feature is a property of items within the grammar of a language. Within each category there are two or more possible values (sometimes called grammemes), which are normally mutually exclusive. Frequently encountered grammatical categories include:

  8. Greenhouse gas - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_gas

    This is an accepted version of this page This is the latest accepted revision, reviewed on 10 January 2025. Gas in an atmosphere with certain absorption characteristics This article is about the physical properties of greenhouse gases. For how human activities are adding to greenhouse gases, see Greenhouse gas emissions. Greenhouse gases trap some of the heat that results when sunlight heats ...

  9. Carbon dioxide in Earth's atmosphere - Wikipedia

    en.wikipedia.org/wiki/Carbon_dioxide_in_Earth's...

    Carbon dioxide has unique long-term effects on climate change that are nearly "irreversible" for a thousand years after emissions stop (zero further emissions). The greenhouse gases methane and nitrous oxide do not persist over time in the same way as carbon dioxide. Even if human carbon dioxide emissions were to completely cease, atmospheric ...