Examlex
In many ecological communities, one common species can function as a foundation species , defining the nature of a community by creating locally stable environmental conditions.
Copernicus
A Renaissance mathematician and astronomer who formulated a model of the universe that placed the Sun rather than the Earth at its center.
Sound Argument
An argument with true premises that also passes the Test of Logical Strength.
Valid
Sound or well-founded; logically correct and acceptable.
Applying an Exception
The act of implementing a deviation from a general rule or principle under specific circumstances.
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