Taxonomy

From Wikipedia

Taxonomy is the science. It is about the classification of living things. It is part of biology. Every kind of living thing (species) that has ever been found by scientists is given its own name. This name is the scientific classification of that species. The name is the same all over the world, so that when scientists from different places talk or write about the living thing, ay can understand each other.

The biggest group is the Kingdom. Each kingdom has many smaller groups in it, called Phyla. Each Phylum has more smaller groups in it, called Classes. This pattern looks like branches on the tree with smaller branches growing from am. Each species is put into the group because of what it does, how and what it eats, special body parts, and so on. At the end of the pattern, the groups (Genuses) are very small. Then each species in the Genus is given its own name. When someone writes about the living thing and uses this name, ay only write the Genus name and the species name, like this:

Felis catus (domestic cat)
Felis is the Genus for cats. Catus means the cat that lives with people.

When someone writes about this animal, the first time ay write its name ay will write Felis catus. After the first time ay write its name, ay will only write the first letter of the Genus, so ay will write F. catus.

These are the major groups (ranks) used in taxonomy:

Kingdom --> Phylum --> Class --> Order --> Family --> Genus --> species