Examlex
The knowledge a child has about whether he or she is male or female,beginning at around two-and-a-half years of age,is referred to as gender
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.
Time Period
A length of time during which a sequence of events occurs, often used to identify historical or geological eras.
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