Opinions on Organism

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In biology, an organism is any contiguous living system, such as a vertebrate, insect, plant or bacterium. More than 99 percent of all species, amounting to over five billion species, that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described.

All known types of organisms are capable of some degree of response to stimuli, reproduction, growth and development and self-regulation (homeostasis). An organism consists of one or more cells. An organism with one cell is a unicellular organism; an organism with more than one is a multicellular organism. Most unicellular organisms are of microscopic size and are thus classified as microorganisms. Humans are multicellular organisms composed of many trillions of cells grouped into specialized tissues and organs.

An organism may be either a prokaryote or a eukaryote. Prokaryotes are represented by two separate domains, the Bacteria and Archaea. Eukaryotic organisms are characterized by the presence of a membrane-bound cell nucleus and contain additional membrane-bound compartments called organelles (such as mitochondria in animals and plants and plastids in plants and algae, all generally considered to be derived from endosymbiotic bacteria). Fungi, animals and plants are examples of kingdoms of organisms within the eukaryotes.

In 2002, Thomas Cavalier-Smith proposed a clade, Neomura, which groups together the Archaea and Eukarya. Neomura is thought to have evolved from Bacteria, more specifically from Actinobacteria. See the article: Branching order of bacterial phyla (Cavalier-Smith, 2002).


In the image below, you can see a graph with the evolution of the times that people look for Organism. And below it, you can see how many pieces of news have been created about Organism in the last years.
Thanks to this graph, we can see the interest Organism has and the evolution of its popularity.

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