Extinct is a classification category on the International Union for the Conservation of Nature’s (IUCN) Threatened Species List.
Extinction occurs when a species — also called “taxon” for the list — no longer exists anywhere on earth. When scientists have done extensive research and agree that there is no longer a single individual specimen of the species they declare it extinct. Essentially, extinction represents the termination of a taxon.
There are six main reasons why species become extinct:
Habitat loss
Introduction of a foreign species
Hunting
Pollution
Disease
Loss of genetic variation
Human actions play a huge role in species extinction, but they’re not the only culprit. Incredibly, 99 percent of species that have ever lived on the planet have gone extinct. Typically, species have a lifespan of about 10 million years, but there are some that stick around for hundreds of millions. Take jellyfish; they have shimmied around the world’s oceans for about 550 million years! However, just because most animals eventually go extinct doesn’t mean we should not be concerned with their conservation status. When species are unnaturally dying out, to maintain the planet’s ecological balance, we must make an effort to ensure their survival.
Seguir leyendoexpand_more
Título : Extinct Animals
EAN : 9791222025636
Editorial : Liam Murray
Fecha de publicación
: 21/11/22
Formato : ePub
Tamaño del archivo : 17.59 mb
Protección : Aucune
El libro electrónico Extinct Animals está en formato ePub
- check_circle
Este eBook es compatible para su lectura en la aplicación Vivlio de iOs y Android.
- check_circle
Este eBook es compatible para leer en My Vivlio.
- check_circle
Este eBook es compatible para su lectura en el lector Vivlio.
- check_circle
Este eBook es compatible para su lectura en un e-reader Vivlio.
¿Quieres leer en un eReader de otra marca? Sigue
nuestra guía.
Edición en Inglés
Conectarme
Mi cuenta