Sentences with phrase «as a mass extinction»

As the mass extinction theory gained attention, it also drew out competing ideas about the length of the «cycle of death» and its causes.

But this is a new threat: «Anything in the vicinity of the previous ones,» Ehrlich says, such as the mass extinction at the end of the Cretaceous that killed half of all species, including the dinosaurs, «would wreck civilization.»

The dynamics of this cloud may help explain such matters as mass extinctions on Earth

Another reason to study these interstellar objects is that they could one day threaten to collide with the Earth and cause catastrophic events such as mass extinctions.

Such an event is known as a mass extinction.

Scientists in America have unveiled information that suggests oceans can take vast amounts of time to recover from disasters such as mass extinctions.

Not exact matches

mama - Today public schools teach evolution as a means to species as fact, even though science knows from the Global geological record and Dr. Gould's work that species occur rapidly followin a mass extinction; in violation of the same seperation claus.

Species occur rapidly following a mass extinction, the opposite of evolution; as we know from the global geological record and Dr. Gould's work in biology.

Species occur rapidly following a mass extinction, the opposite of evolution as a means to species.

«Paleontologists have come up with various kill scenarios for mass extinctions, but plant life may not be affected by dying suddenly as much as through interrupting one part of the life cycle, such as reproduction, over a long period of time, causing the population to dwindle and potentially disappear,» said co-author Cindy Looy, a UC Berkeley associate professor of integrative biology.

The surprise findings tell scientists something about past extinctions and Earth's future prospects as climate change, habitat destruction and pollution set us up for Earth's sixth mass extinction.

is that rare book that will have you laughing as you learn just how a mass extinction might unfold.

Today's frogs, comprising more than 6,700 known species, as well as many other animal and plant species are under severe stress around the world because of habitat destruction, human population explosion and climate change, possibly heralding a new period of mass extinction.

Perhaps even more impressive, the biggest mass extinction event of all, at the end of the Palaeozoic (245 million years ago), appears to have had a major catastrophic component, as indicated in Paul Wignall's article («The day the world nearly died», New Scientist, 25 January 1992).

Their results show that the first indicators of a mass extinction were evident as early as 700,000 years prior to the actual event.

Still, they, like crocodiles, turtles, mammals, and birds, survived the asteroid impact, suggesting that the mass extinction at the time may not have been as massive as previously thought.

A new study unequivocally points to humans as the cause of the mass extinction of large animals all over the world during the course of the last 100,000 years.

And it is a mass extinction entirely caused by the relentless expansion of human habitat and agriculture, as well as human domination of the natural systems — such as the climate — that make life possible.

In North America, the Ice Age was marked by the mass extinction of several dozen genera of large mammals, including mammoths, mastodons, American horses, Western camels, two types of deer, ancient bison, giant beaver, giant bears, sabre - toothed cats, giant bears, American cheetahs, and many other animals, as well as plants.

«With the Earth in the midst of a sixth mass extinction, it is astonishing how little we know about our planet's biodiversity, even for charismatic groups such as tarantulas.»

Not only did mammals begin diversifying earlier than previously expected, but the mass extinction wasn't the perfect opportunity for mammal evolution that it's traditionally been painted as.

Norman Myers, a marathon runner in his spare time, takes the reader several times around the planet to support his thesis with regional case studies, while considering how problems such as population, mass migrations and the massive extinction of species are related.

We are triggering a mass extinction that could be as severe as the one that ended the reign of the dinosaurs.

A study of more than 6,000 marine fossils from the Antarctic shows that the mass extinction event that killed the dinosaurs was sudden and just as deadly to life in the polar regions.

The study is the first to suggest that the mass extinction event was just as rapid and severe in the polar regions as elsewhere in the world.

But as far as they are concerned, «the two largest mass extinctions in Earth history at the K - T and P - T boundaries were both caused by catastrophic collisions with chondritic meteoroids.»

These mass extinctions are important punctuation marks in the history of life, as once - dominant groups are swept away and replaced with new ones.

Physiological factors, such as a rapid growth and maturation rate, might explain how this line of bird was able to survive the Cretaceous - Paleogene mass extinction event that occurred approximately 66 million years ago and eliminated approximately three - quarters of the plant and animal species on Earth.

That's especially mysterious because Enantiornithines were exceptionally abundant (they apparently outnumbered the ancestors of modern birds before the asteroid struck) and had presumably played the same ecological roles as the ancestors of modern birds, which survived the mass extinctions.

Based on their findings, the researchers show that the biodiversity crisis is real and stressed the need to include assessments of invertebrates in order to obtain a more realistic picture of the current situation, known widely as the «sixth mass extinction.»

The climate became much drier causing the mass extinction of many species within the dominant plant groups, such as horsetails and club mosses.

Published literature shows dramatic shifts in species» ranges as glaciers retreated, but little evidence of mass extinctions during that period (1).

As the planet faces the dawn of a sixth mass extinction, scientists are searching for clues about the uncertain road ahead by exploring how ancient ecosystems collapsed and bounced back from traumatic upheavals.

Finds such as the newly discovered Birgeria species and the fossils of other vertebrates now show that so - called apex predators (animals at the very top of the food chain) already lived early after the mass extinction.

The fossil shows that, as predicted, plesiosaurs evolved in the late Triassic and survived the mass extinction that ushered in the Jurassic era 200 million years ago.

When Fassett dated the bone to half a million years or so after the dinosaurs» supposed mass extinction, most paleontologists dismissed his find as a meaningless anomaly or a mistake.

Large marine reptiles disappeared during the mass extinction, as did the ammonites, an ancient cephalopod group similar to the chambered nautilus.

The biggest surprise, the researchers note, is that some families of beetles, once they appeared, have never gone away — even surviving mass extinctions such as those that claimed the dinosaurs and many other species 66 million years ago.

This mass die - off has become known as the end - Permian mass extinction.

To avoid the sixth mass extinction we will probably have to employ more aggressive conservation, such as moving species to help them cope with a changing climate.

Species can also die out in mass extinctions, such as the one that caused the demise of the dinosaurs.

«Now we should reconsider the consequences of sporadic oxygen outbursts and their correlations to other major events in Earth's history, such as the banded - iron formation, snowball Earth, mass extinctions, flood basalts, and supercontinent rifts.»

Lead author Sandra Rehan, an assistant professor of biological sciences at UNH, worked with colleagues Michael Schwarz at Australia's Flinders University and Remko Leys at the South Australia Museum to model a mass extinction in bee group Xylocopinae, or carpenter bees, at the end of the Cretaceous and beginning of the Paleogene eras, known as the K - T boundary.

«If you think about a mass extinction caused by catastrophic event such as a meteorite impacting Earth, you might imagine all species are equally likely to die,» Blonder said.

The next period is known as the Dead Interval, and was marked by mass extinctions.

The first colonists probably contributed to the mass extinction of large animals like mastodons, which died out as the ice age ended 12,000 years ago.

Massive Methane release as detailed in the greatest mass extinction event of all time.

«Now we should reconsider the consequences of sporadic oxygen outbursts and their correlations to other major events in the Earth's history, such as the banded - iron formation, snowball Earth, mass extinctions, flood basalts, and supercontinent rifts.»

The earlier catastrophe is now known as the Permo - Triassic mass extinction because it occurred as the Permian Period gave way to the Triassic.

At the time of the end - Permian mass extinction, these three areas were connected as part of the supercontinent Pangea.