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Mainly because, nature hates a vacuum. When a certain species drops in numbers, often another, similar species takes over the niche vacated. A good example is the northern spotted owl. As its numbers declined, a close relative, the barred owl, has became more common in the Northwest, displacing the northern spotted owl in many areas.
What else can I help you with?
Why do most species of animals become extinct?
Most become extinct because they can not adapt to changes in their environments. Those that can don't become extinct.
Could a polar bear become extinct?
Yes. All animals have the potential of becoming extinct, especially those that are on the endangered, critical or threatened species list.
What are endagared plants?
Those plants that are about to become extinct.
What would happen if the Indus river dolphin were to become extinct?
The prey species of the river dolphin, such as fish and shrimps, would suddenly boom and dominate the ecosystem as there would be no predator keeping their populations in check. Whatever those prey species feed on would suddenly decrease as there would be more organisms feeding of it. When one species becomes extinct, it can cause other species to also become extinct. However hopefully the ecosystem returns to an equilibrium eventually. Hope this helps!
What needs to be done about it?
All endangered and vulnerable species need to be protected. If not they will become extinct. Each animal plays an important role in biodiversity, so it is our duty as the smarter species to protect those that are endangered.
Differentiaate between endangered species and threatened species?
Threatened means that the animal is vulnerable to extinction and the population of the animal is declining. (ex: Certain species of whale population are being threatened.) Endangered means that the animal will soon be extinct if nothing is done about it. Some endangered animals are being bred in captivity until their numbers increase enough to be released back in the wild. (ex: Bald Eagles are an endangered species of bird. Pandas are an endangered species of bear.) Extinct means that the animal has completely died out and there aren't any left of this species. (ex: Dinosaurs are an extinct species of reptile. Dodo is an extinct bird.) Here's a visual: Threatened-------------> Endangered---------------> Extinct
How does natural selection help few species to survive?
Natural selection helps a few species survive by favoring those with advantageous traits that increase their likelihood of survival and reproduction in their environment. Over time, these advantageous traits are passed down to future generations, leading to the continuation of those species while others may become extinct.
What does it means if a species is extinct?
Extinct usually means that no more individuals of the species that are capable of reproducing are still alive. If there are any individuals of the extinct species still alive, since they cannot reproduce for some reason, they are the last generation.
What Percent of animals have gone extinct over the history of earths existence?
Countless thousands of species went extinct before man every showed up on earth. The difference is: Since we weren't here to screw anything up, it was a natural part of nature. Now even today, the great majority of species facing extinction are there due to no fault of man's - nature is continually extincting species and replacing them with new ones, man or not. But some species are definitely near the brink because of man, and those are the ones we are working hardest to save. For if they become extinct, it won't be natures doing - it will be our fault.
Is the biological species concept is useful only for extinct organisms?
No, the biological species concept can be applied to both extant and extinct organisms. It is a useful framework for defining species based on reproductive isolation and gene flow within populations, regardless of whether those populations currently exist or not.
Why some species have survived the through ages while some have become extinct?
Some animals are better at adapting to changing conditions and circumstances. Those that can adapt survive when conditions change, others die because they don't have the ability to adapt.
Which Wales are extinct?
The list of extinct whales typically only includes those in the fossil record. However, the population of Atlantic Gray Whales went extinct in the 18th century. Extinct fossil whale species include the Durodon, Basilosaurus cetoides, and ambulocetus, The Obedenocetops is the closet to modern whales.
