英語 での Mass extinctions の使用例とその 日本語 への翻訳
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This suggests to me that life causing these mass extinctions because it did is inherently anti-Gaian.
He puts in 80 parts per million hydrogen sulfide-- the same stuff that survived these past mass extinctions-- and he turns a mammal into a reptile.
At least four times in the past 500 million years enormous discharges of carbon have changed climates and triggered mass extinctions.
Over the last 500 million years, Earth has experienced five mass extinctions.
Life on Earth has endured five mass extinctions to date.
Periodic mass extinctions on Earth, as indicated in the global fossil record, could be linked to a suspected ninth planet.
Now that's all very well and good but, how do these physical effects[1 and 2 alone] cause mass extinctions?
Scientists define five global mass extinctions in the past 500 million years.
In the past, mass extinctions have been caused on Earth by various causes.
According to scientists, there have been five prior mass extinctions in the past 450 million years.
Earth has had more major mass extinctions than we realized.
During the last 500 million years the earth has witnessed five mass extinctions.
There are five major mass extinctions over the last 500 million years, called the Big Five.
The advent of farming produced new waves of mass extinctions, but more importantly, it created a completely new life form on earth: domesticated animals.
The new view of mass extinctions is, yes, we were hit, and, yes, we have to think about the long term, because we will get hit again.
We can continue business as usual and see temperature rises of several degrees at least, extreme storms, droughts, floods, mass extinctions, water and food shortages and the resulting conflict.
In that complex record of fossils, there were times when lots of stuff seemed to be dying out very quickly, and the father/mother geologists called these"mass extinctions.
They range from 450 million years ago to the last, the K-T, number four, but the biggest of all was the P, or the Permian extinction, sometimes called the mother of all mass extinctions.
Some astronomers outside the field push the idea that periodic asteroid strikes caused each of the planet's other four mass extinctions, but this hypothesis has virtually no support in the fossil record.
Palaeontologists characterize mass extinctions as times when the Earth loses more than three-quarters of its species in a geologically short interval, as has happened only five times in the past 540million years or so.