The process by which a species or particular group of organisms completely disappears from Earth, often due to various environmental or human-induced factors, leading to the irreversible loss of biodiversity.
The condition where specific living organisms, such as plants or animals, no longer exist within their natural habitats, resulting in a permanent absence that affects ecological balance and health.
A critical phenomenon indicating that a species is at an exceptionally high risk of vanishing forever, often necessitating urgent conservation efforts to prevent loss.
The act of completely eradicating a species or group, either intentionally or unintentionally, which can occur through various means, including habitat destruction or direct hunting.
Example:
絶滅は進化の一部である。
A category of wild plants and animals that face a significant risk of extinction in the near future, primarily due to factors like habitat loss, pollution, or over-exploitation.
Species recognized by conservation organizations as being in urgent need of protection to prevent their complete disappearance from the Earth, often assessed based on population size and trends.
A category of living organisms that no longer exist in the wild or in captivity, often due to environmental changes or human activity.
A group of organisms that has completely vanished from the Earth, with no surviving members, highlighting the fragility of biodiversity.
Species that have ceased to exist, representing a historical loss of biological diversity and impacting ecosystems and the web of life.
A state in which a species or population is on the brink of disappearing completely, often due to human activity or environmental changes.
Referring to a condition where survival is severely threatened and immediate action is necessary to prevent complete extinction.
Describing a situation where only a small number of individuals remain, indicating that the species is nearing total eradication.
A significant and rapid reduction in biodiversity, leading to the widespread disappearance of numerous species across various ecosystems.
A geological or biological phenomenon characterized by the loss of a substantial number of species in a relatively short period of time, often triggered by catastrophic environmental changes.
A crucial turning point in Earth’s history marked by a profound decline in the variety of life, significantly altering the planet's biological landscape.