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Introduced species
An introduced species (also
known as an exotic species)
is an organism that is not
native to the place or area
where it is considered
introduced and instead has
been accidentally or
deliberately transported to
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Zebra mussel
The Zebra mussel (Dreissena
polymorpha) is a bivalve
mussel native to freshwater
lakes of southeast Russia.
Zebra mussels are currently
causing serious problems in
North America and Sweden,
where they are considered an
... > full story
Purple loosestrife
Purple loosestrife is a
semi-aquatic herbaceous
plant belonging to the
loosestrife family,
Lythraceae, native to the
wetlands of Eurasia. It is a
herbaceous perennial plant,
growing 1-2 m tall, forming
... > full story
Pest (animal)
A pest is an animal which
has characteristics which
people regard as injurious
or unwanted. An example of
serious pests are those
organisms which vector human
disease, such as rats and
fleas which carry the plague
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Invasive species
Invasive species is a phrase with several definitions. The first definition expresses the phrase in terms of non-indigenous species (e.g. plants or animals) that adversely effect the habitats they ... > more -
Gypsy moth
The gypsy moth, Lymantria dispar, is a moth of European origin. Gypsy moth larvae prefer hardwoods, but may feed on several hundred different species of trees and shrubs. In the East the gypsy moth ... > more -
Transgenic plants
Transgenic plants are plants that have been genetically engineered, a breeding approach that uses recombinant DNA techniques to create plants with new characteristics.They are identified as a class ... > more
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