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Hace 3 días · Ancient groups of animals including mollusks, chilopods, some fishes, reptiles, and amphibians show affinities with the animal life of Africa, Australia, and New Zealand. More recent species , mostly vertebrates, migrated from North America .
- Endangered Species
Endangered species, any species that is at risk of...
- Endangered Species
Hace 2 días · Endangered species, any species that is at risk of extinction because of a sudden rapid decrease in its population or a loss of its critical habitat. Previously, any species of plant or animal that was threatened with extinction could be called an endangered species.
Hace 5 días · Reptiles, as commonly defined, are a group of tetrapods with an ectothermic ('cold-blooded') metabolism and amniotic development. Living reptiles comprise four orders: Testudines ( turtles ), Crocodilia ( crocodilians ), Squamata ( lizards and snakes ), and Rhynchocephalia (the tuatara ). As of May 2023, about 12,000 living species of reptiles ...
Hace 3 días · The koala ( Phascolarctos cinereus ), sometimes called the koala bear, is an arboreal herbivorous marsupial native to Australia. It is the only extant representative of the family Phascolarctidae. Its closest living relatives are the wombats.
Hace 2 días · The tiger ( Panthera tigris) is a member of the genus Panthera and the largest living cat species native to Asia. It has a powerful, muscular body with a large head and paws, a long tail and orange fur with black, mostly vertical stripes.
Hace 4 días · Biodiversity loss, the reduction in an area’s biodiversity (the number of genes, species, individual organisms, or ecosystems) expressed by species loss, population declines and reductions in the genetic diversity within a species, and the collapse of biological communities.
Hace 4 días · Logically speaking, you would think that animals who appeared to be the same—even if they were found in different parts of the world—would belong to the same species, and that they would share ...
