Use no article with nouns that refer to all of something or something in general - Articles (a, an, the) - Multilingual Writers and ESL Topics

Rules for writers, Tenth edition - Diana Hacker, Nancy Sommers 2021

Use no article with nouns that refer to all of something or something in general
Articles (a, an, the)
Multilingual Writers and ESL Topics

When a noncount noun refers to all of its type or to a concept in general, it is not marked with an article.

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In most cases, when you use a count noun to represent a general category, make the noun plural. Do not use unmarked singular count nouns to represent whole categories.

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EXCEPTION: In some cases, the can be used with singular count nouns to represent a class or specific category: The Chinese alligator is smaller than the American alligator. See number 6 in 29b.