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What are some of the causes of background and mass extinctions?
Wiki User
∙ 12y ago
Ice ages, disappearance of prey, floods, and global warming.
I hope this helps.
Wiki User
∙ 12y ago
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When geologists refer to the big five' what are the referring to?
When geologist refer to the Big Five they are referring to the five mass extinctions on Earth. Some of these extinctions are the Paleozoic and Mesozoic eras.
There will be a mass extinction in the cenozoic era?
Almost certainly. There have already been five mass extinctions in the Phanerozoic Eon, so there is no reason to believe there will not be a sixth. Some say we are already in one.
What causes juice to evaporate slower than water?
Because the juice is a mixture; some components have a lower volatility than water. And the boiling point is a colligative property, depending on the mass of solutes.
Which planet don't have mass?
All planets have mass, but some have more than others.
What are some extinctions by meteors?
The most famous of course is the extinction of the Dinosaurs 65 million years ago in the Cretaceous - Tertiary period.Prior to that there was the Triassic - Jurassicextinction about 205 million years ago. Although this is a disputed impact extinction, it is still one of the theories.The most devastating was the Permian - Triassicextinction 250 million years ago in which 96% of all marine species and 70% of all land species were killed including insects. This extinction event is believed to be a series of small extinctions over time or 2 large extinctions , there are several theories from climate change to impact.The further back you go the harder it is to estimate extinctions because of the lack of fossil records but two more that are listed are.The late Devonian extinction 360-375 million years ago, again a disputed impact event, but a comet or meteor is among the favoured.And Ordovician - Silurian extinction 440-450 million years ago.
Name some birds that survived mass extinctions.?
If they went extinct they wouldn't survive
When geologists refer to the big five' what are the referring to?
When geologist refer to the Big Five they are referring to the five mass extinctions on Earth. Some of these extinctions are the Paleozoic and Mesozoic eras.
When geologists refer to the Big Five what are they referring to?
When geologist refer to the Big Five they are referring to the five mass extinctions on Earth. Some of these extinctions are the Paleozoic and Mesozoic eras.
When geologist refer to the big five what are they referring to?
When geologist refer to the Big Five they are referring to the five mass extinctions on Earth. Some of these extinctions are the Paleozoic and Mesozoic eras.
What are mass extinctions followed by?
Mass extinctions are usually followed by long periods of low or absent population. Some species always survive a mass extinction, following the Darwinian law of survival. When the dinosaurs died out the mammals began to prevail and eventually took over.
The causes of some of the earliest extinctions such as the Permian extinction are because humans started changing the earth?
A+ False
There will be a mass extinction in the cenozoic era?
Almost certainly. There have already been five mass extinctions in the Phanerozoic Eon, so there is no reason to believe there will not be a sixth. Some say we are already in one.
What is it called in particular when a high percentage of the species on earth dies off at a particular time?
These are called "mass extinctions", and there have been five such events (that we know of) on the Earth. These are generally caused either by astronomical impact events (such as the asteroid that killed off the dinosaurs 65 million years ago) or massive volcanic activity. The causes of these extinctions has been a matter of some dispute, since they happened so long ago.
How does the background rate of extinction differ from mass extinctions?
The background rate of extinction is much smaller than those that occur during a mass extinction. For example, carnotaurus sastrei went extinct during the mid-Cretaceous, when only a handful of dinosaurs went extinct. On the other hand, 65 million years ago, all dinosaurs went extinct during the K/T mass extinction event.
What are some extinctions other than dinosaurs?
dodos, elephant birds, passenger pigeons
How are mass and gravity different?
Mass is what causes gravity. Better do some reading on mass, and on gravity; the difference will be quite clear. Those are not two things that you easily confuse, once you get the basic idea.
How mass extinction affected life on Earth?
Mass extinction isn't a natural role in any life-system. They happen as a consequence of some catatrosphic disaster or radical unbalance in the eco-system. As a result of mass extinctions other 'groups' evolve into species that take the place of those exterminated.
