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Rare, Vulnerable, Endangered or Extinct?

The following terms are used to describe some species of plants and animals:

Extinct
A species is considered extinct if it has not been seen in the wild for at least fifty years.

Endangered
Species which are at a high risk of becoming extinct in the near future, if nothing is done to improve their situation.

Vulnerable
Species which are likely to become endangered within the next 25 years, if nothing is done to improve their situation.

Rare
Species which have small populations or only live in a small number of places, and could become vulnerable or endangered quite quickly.

More information on How Species Become Extinct

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