Many shark species are threatened with extinction.

Many animal species are on the brink of extinction.

But does the earth have to wait for our extinction as a species?

As a result, more than 10,000 species are threatened with extinction two thirds of all endangered species on the planet.

For the 10,000 bird species, there should only be one extinction in each century.

Just like every species has an important gift to give to the ecosystem, and the extinction of any species hurts everybody.

As for biodiversity, the most important species threatened with extinction today is the human race.

Every year, more species many of them not even named become threatened with extinction or go extinct.

Plant and animal species worldwide are vanishing at an unprecedented pace 100 to 1,000 times the natural extinction rate.

What are catastrophic effects? A three degree centigrade climate change rise that will result in 50 percent species extinction.

With the exception of the past five mass extinction events, estimates from the fossil record suggest that an approximate background rate is one extinction per million species years, (1 E MSY).

The Extinction Puzzle

The Last Extinction

Senator Manny Villar is worried that the frenzied gecko hunting could lead to the extinction of the species in the country

The Age of Extinction

Blue fin tuna is heading for commercial, if not outright, extinction, as are a host of other economically and ecologically important marine species.

Of the world's species, 12 of birds, 24 of mammals, and 30 of fish are either vulnerable or in immediate danger of extinction.

So what it tells us actually is that there's actually a risk of extinction of this species because its population is so small.

To avoid such uncertainties, my colleagues and I introduced the extinction rate the number of extinctions per year per species or, to make the numbers more reasonable, extinctions per million species years E MSY.

To get an accurate picture of extinction, we must adjust the total number of extinctions for the length of time science has known bird species.

Global demand for fish consumption is growing, and so, too, is the global capacity to catch fish, driving some species to the point of extinction.

It is feared that these new hydroelectric dams could lead to the extinction of many of the fish species that are endemic to the river.

They are in danger of extinction.

Extinction is a part of evolution.

Flora includes 909 species, including 645 species of vascular plants, 151 species of fungi, 48 species of lichens, 65 species of moss.

There are 212 mammal species, 536 bird species, 240 reptile species, 850 freshwater fish species (Tonle Sap Lake area), and 435 marine fish species.

For example, they hoped that certain species of fish like the New Zealand snapper would return because they had been fished to the brink of commercial extinction.

And livestock production uses 30 of the earth s land surface that once was home to wildlife, thereby playing a critical role in biodiversity loss and species extinction.

In 1992, when the world s governments first promised to address man made global warming, they also vowed to head off the human induced extinction of other species.

There are 62 species of mammals, more than 270 species of birds, 39 species of fishes, 6 species of reptile and 9 species of amphibians.

A species that gives rise to another species is a paraphyletic species, or paraspecies.

In the case of sharks and rays, a recent survey indicates that close to one third of the 64 ocean living species are on the verge of extinction.

For example, we may regret that we can no longer see some species of wild animal that has been hunted to extinction by people who lived centuries ago.

Present day extinction rates are 100 1000 times greater than the background rate and up to 30 of current species may be extinct by the mid 21st century.

Is Europe's right doomed to extinction or extremism?

Ongoing loss is driving fears of mass extinction.

These animals are on the verge of extinction.

Many kinds of animals are threatened with extinction.

We added species that are probably extinct, too. With these two adjustments, the extinction rate has been about a 100 times higher than natural over the last two centuries.

A seminal 1998 study led by David Wilcove, now an ecologist at Princeton, cites invasive species as the second leading cause of extinction in the U.S., after habitat loss.

Tropical forests, for example, hold the majority of bird species and likely most other kinds of species too. If present trends of deforestation continue, we project bird extinction rates to climb to 1,500 E MSY by the last decades of this century.

Some wild animals are on the verge of extinction.

Some wild animals are on the brink of extinction.

As for biodiversity, the most important species threatened with extinction today is the human race. True, international action can help to deal with the twin problems of poverty and environmental degradation.

Some, such as E. O. Wilson of Harvard University, predict that human destruction of the biosphere could cause the extinction of one half of all species in the next 100 years.