Living beings are understood to be the various forms that life possesses throughout the year, from the simplest and smallest to the most complex forms of life, among which human beings themselves are present.
Living beings are widely diverse in size, complexity, intelligence and other particular characteristics that allow them to adapt to different environments and fight with others in order to gain access to resources necessary for survival and reproduce their species, transmitting those peculiarities to their offspring. behavioral or anatomical. This is what the adaptation and evolution of the species is all about.
The origin of life is not exactly known , and this is still material for debate today, because the bodies of living beings are made of exactly the same components as inanimate matter, although present in different forms. With regard to this, in the body of living beings it is likely to find various portions of metals and inorganic elements.
Despite this, living beings differ from inert matter in that they try by any means to maintain their chemical structure and stable biology, that is, to stay alive, and at the same time reproduce their species. If they fail in the attempt to maintain their balance internally, living beings die and their bodies decompose to their smallest elements.
Characteristics of living beings
- They consume energy: to maintain life it is necessary to consume energy daily, this energy is obtained from the environment from various elements whose function is to introduce matter to the body and then subject it to chemical reactions.
- They maintain their homeostasis : this term refers to the internal balance of matter and energy, necessary for the body to function in a balanced and non-chaotic way.
- They are deadly and reproduce : all existing forms of life die, fortuitously, since in the end the disorder (entropy) manifests itself in the system after a time, or when accidents or violent changes occur that do not allow it to adapt to time . The answer to this reality is to perpetuate the species.
- They react to their environment: one of the peculiarities of living beings is that they do not exist outside their environment and they adapt to its conditions, that is, they interact with it in different ways, and as a consequence they also modify it.
Throughout life cycles, living beings fulfill three tiny vital functions, these are:
- Nutrition: it is based on obtaining matter and energy to maintain energy, compensate the body and make it grow. It is believed that there are two types of living beings: autotrophs (they create their own food) and heterotrophs (they feed on the environment that surrounds them)
- Relationship: living beings constantly interact with their environment and also with other living beings, managing to get away from danger and feed themselves.
- Reproduction: once being at the level of a certain well-being, living beings proceed to reproduce in order to perpetuate the species.