際際滷

際際滷Share a Scribd company logo

Extinction

V
vennila jaipragash

The document defines extinction as the complete disappearance of a species from Earth. It describes the main types of extinction such as diversity independent, diversity dependent, mass extinction and absolute extinction. The causes of extinction include environmental changes, lowering of species capacity, large numbers of species disappearing over a limited time period, species dying without reproducing, and one species evolving into another species. The significance of extinction is discussed as the origin of new groups, establishing the geological time scale, and providing evidence of evolution.

1 of 10
EXTINCTION
DEFINITION The complete disappearance of a species or race from earth is called Extinction.
TYPES OF EXTINCTION Diversity independent extinction Diversity dependent extinction Mass extinction Absolute extinction Pseudo extinction
Diversity independent extinction Extinction caused by environmental changes. Diversity dependent extinction Extinction caused by lowering of the species capacity. Mass extinction Disappearance of large number of species in limited time.
Absolute extinction species exit to death without issues. Pseudo extinction One species evolve to other species extinct.
Causes Eruption Theory Collision Theory Fluctuation Competition Epidemic Racial Senescence Over Specialization colony size progressive changes i
Statigenesis Hunting Poor Faculty of Reproduction Climate Drops in Sea Level
Significance of Extinction Origin of New Groups Geological Time Scale Evidences of Evolution
THE END
THE END

More Related Content

Extinction