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Glossary

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Entries 1 to 9 of 9

 
Economist
Ecosystem
Ecosystem
Emphysema
Endemic
Endemic
Epidemiology
Evidence base
Extinction
 		  
Extinction
In biology and ecology, extinction is the ceasing of existence of a species. The moment of extinction is generally considered to be the death of the last individual of that species. Extinction is a natural phenomenon; it is estimated that 99.9% of all species that have ever lived are now extinct. Through evolution, new species are created by speciation — where new organisms arise and thrive when they are able to find and exploit an ecological niche — and species become extinct when are no longer able to survive in changing conditions or against superior competition.

Source: Wikipedia
 
 

A close up of a medieval manuscript showing words in another language. The words make no sense.

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