A life form is the physical manifestation of a type of organism (such as a species) in its mature state.
Responsiveness to the environment, growth and change, the capacity for reproduction, the ability to breathe and have a metabolism, the ability to maintain homeostasis, being composed of cells, and the ability to convey traits to progeny are the seven qualities of life.
According to what is being hailed as the most accurate estimate of life on earth, humans share the globe with up to 8.7 million distinct forms of life.
The single-celled (such as bacteria, archaea, and protists) and multicellular organisms are the two main categories (animals and plants).