Which level of biological classification comes directly below 'kingdom'?

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The classification system in biology is hierarchically structured, with several levels used to categorize organisms based on shared characteristics. The level that comes directly below 'kingdom' is called 'phylum.' This tier organizes organisms into groups that share a significant level of anatomical and genetic similarity.

In this hierarchy, the kingdom encompasses a broad range of organisms. For example, the animal kingdom (Animalia) includes a vast variety of life forms, from sponges to mammals. Within this kingdom, organisms are further divided into phyla based on fundamental structural and functional qualities.

For instance, within the animal kingdom, there are various phyla such as Chordata (which includes all vertebrates) and Arthropoda (which includes insects and crustaceans). This foundational grouping sets the stage for further division into classes, orders, and families, each representing increasingly specific shared traits among the organisms they contain. Understanding this classification system helps clarify the relationships among diverse forms of life and supports effective communication and study in biological sciences.

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