In the Greek language, Gaîa is the name given to the goddess Earth. This word came to scientific Latin as gaea, which is the closest etymological antecedent of gea.

In our idiom we can find the term Gea to allude to the aforementioned divinity of Greek mythology. Gea, in this sense, it is equivalent to Gaia or Gaya.

The Royal Spanish Academy (RAE), however, it recognizes meanings of gea What common noun. Gea is called set of elements that make up the inorganic kingdom of a region and the text that takes care of describe said set.


Inorganic matter constitutes the gea of ​​a region.

La gea in the field of biology

In the field of biology, gea is equivalent to the inorganic kingdom of a certain area. To understand the idea precisely, therefore, you first have to be clear about what a kingdom and what does the adjective refer to? inorganic.

A kingdom is a taxonomic category (that is, it allows a classification). This category includes phyla of organisms that have essential characteristics in common.

The determination of which are the existing kingdoms has changed throughout history and continues to be a matter of debate. We can say that there was a first basic differentiation of three kingdoms: animals, floors Y minerals, the first two being made up of living beings and the third, by inorganic substances.

Thus, at this point we come to the concept of inorganic. In this way, the body or element lacking vital organs. In other words: the inorganic does not have life.

Returning to gea, it is the inorganic matter present in a territory. The Earth, the stones and the Water, in this way, they integrate the gea.


Gaia, Gaia or Gaya was a deity from Greek mythology.

A primordial goddess

Retaking the mythology greek, Gea, Gaia or Gaya She was a primordial goddess since she existed from the beginning of the universe. In fact, he personified the planet Earth, similar to what it represented Terra in Roman mythology.

The Greek cosmogony indicated that, from Chaos existing before the appearance of the gods, arose Gea, from whose being they were born Ponto (the sea) Y Uranus (the Darling).

The Gea hypothesis

At the end of the decade of 1960, the english chemist James lovelock recovered the mythological name to develop the call Gea hypothesis or Gaia hypothesis. According to Lovelock, the surface of the Earth and the atmosphere they act coordinately as a system what has the biosphere (the set of living beings) as the main component.

The biosphere, continuing with the hypothesis postulated by this scientist and environmentalist born on July 26, 1919 in Letchworth, self-regulates the elemental conditions of the planet –such as chemical composition and temperature–, tending towards equilibrium. Thanks to this particularity, the environment becomes conducive to the development and subsistence of the different species of living beings.

The Gea hypothesis it has been analyzed and debated in international conferences. It even gave rise to new hypotheses and theories that seek to explain from the origin of life to the evolution of the environment.