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The original first two kingdoms were animals and plants.
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Living things have cells. And living things use energy.
There are two kingdoms of bacteria. The two kingdoms of bacteria are Archaebacteria and Eubacteria. This is taught in biology.
The two levels of organization found in living things are mainly cells and systems. There are however four levels of organization in living things which start with cells, tissue, organs and systems.
The original first two kingdoms were animals and plants.
Plants and animals (plantae and animalia)
Six.AnimaliaPlantaeFungiProtistaArchaeaand Bacteria
At one time, all living things were classified into two kingdoms of plants and animals. Aristotle developed this first classification system.
The six kingdoms used to classify living things are plants, animals, protists, fungi, archaebacteria, and eubacteria. A way to remember these kingdoms is to memorize the first two letters of each kingdom, such as 'pl-an-pr-fu-ar-eu'.
Actually, there are more than two 'kingdoms' in modern biological classification. Modern biologists recognize three 'domains' of life: Bacteria, Archaea, and Eukarya. Bacteria and Archaea are prokaryotes.
Carolus Linnaeus defined two main kingdoms in his classification studies of living things. For plants he chose Vegetabilia, and for animals he chose Animalia.
Sun and moon
"Class" is a reference to the taxonomy, or classification, of all living things on Earth. All living things are divided and subdivided into Kingdoms, Phylums, Classes, Orders, Families, Genuses, and Species, the last two, Genus and Species, being the two which generally make up an animals scientific name. So, in other words "class" is part of the classification system of living things.
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Living things have cells. And living things use energy.
No elements are living