Examlex
For the standard normal curve, find the z-score that corresponds to the first quartile.
Oxygen-rich Atmosphere
An atmospheric condition where there is a high concentration of oxygen, significant for sustaining aerobic life forms.
Great Dying
An event at the end of the Permian period, about 252 million years ago, where there was a massive extinction of species.
Meteorite Impact
The collision of a meteorite with the Earth, creating craters and sometimes affecting climate and biological evolution.
Sea Bottom
The lowest part of a sea or ocean, consisting of sediment and the underlying bedrock.
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