Taxonomy is the study of the methods and principles of taxonomy, classification is to follow the principles and methods of taxonomy, the various taxa of organisms for naming and hierarchical division, classification system is a hierarchical system, usually including seven main levels: species, genera, family, order, class, phylum, boundary. Species (species) are the basic units, and the species of the close relatives are grouped into the genus, the genus of the close relatives are grouped into the family, the family is subordinate to the order, the order is subordinate to the order, the class is subordinate to the gate, and the gate is subordinate to the boundary.
Originally organisms were divided into two broad taxa (boundaries): entrenched plants and animals in action. With the development of science, people have gradually found that there are many problems in this two-world system, and the problems arise from intermediate types, such as eye worms that synthesize the dual characteristics of the two worlds of animals and plants, both chloroplasts for photosynthesis, and can also act to ingest food. Botanists classify them as algae, called naked algae; zoologists classify them as protozoa, called eyeworms. Intermediate types are evidence of evolution, but they become a difficult problem for classification. To solve this dilemma, in the 1860s, it was proposed to establish a third realm of lower organisms, called the protozoal realm, which included bacteria, algae, fungi, and protozoa. This three-realm system solves the problem of inseparable boundaries between animals and plants.
In the animal kingdom, man belongs to the suborder of the post-epizoan subcategory Phytophthora Phylum Chordate Phytophalmos subphylum Phytophthalmos Suborder Mammalian order Euphrain suborder Primates Euphrapodidae Narrow-nosed Monkey Suborder Naked Ape Family.
The earth has been floating in the vast universe for three billion years, and human beings have been fortunate to evolve to the top of the current biological world, and they must be sober and in awe of nature. The pace of biological evolution has never stopped, dinosaurs have also dominated the earth, and human beings are just a drop in the ocean. Realize that the present, lotte has destiny, the world is big, and all things have animism.
