Whois & Analysis for biology4kids.com

Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, evolution, distribution, identification and taxonomy.

Modern biology is a vast and eclectic field, composed of many .

However, despite the broad scope of biology, there are certain unifying concepts within it that consolidate it into single, coherent field.

In general, biology recognizes the cell as the basic unit of life, genes as the basic unit of heredity, and evolution as the engine that propels the creation of new species.

It is also understood today that all organisms survive by consuming and transforming energy and by regulating their internal environment to maintain a stable and vital condition known as homeostasis.

Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones).

Vertebrates represent the overwhelming majority of the phylum Chordata, with currently about 66,000 species described.

Vertebrates include the jawless fish and the jawed vertebrates, which include the cartilaginous fish (sharks, rays, and ratfish) and the bony fish.

A microorganism or microbe is a microscopic organism, which may be single-celled or multicellular.

The study of microorganisms is called microbiology, a subject that began with the discovery of microorganisms in 1674 by Antonie van Leeuwenhoek, using a microscope of his own design.

Invertebrates are animals that neither possess nor develop a vertebral column (commonly known as a backbone or spine), derived from the notochord.

This includes all animals apart from the subphylum Vertebrata.

Familiar examples of invertebrates include insects; crabs, lobsters and their kin; snails, clams, octopuses and their kin; starfish, sea-urchins and their kin; jellyfish, and worms.

The cell (from Latin cella, meaning "small room") is the basic structural, functional, and biological unit of all known living organisms.

A cell is the smallest unit of life that can replicate independently, and cells are often called the "building blocks of life".

The study of cells is called cell biology.