It is known that people have been bringing alien bird species onto islands for thousands of years, but how this has shaped the diversity of those species has just been brought to light by a study ...
来自MSN
They are a major threat to wildlife around the world, as native animals are ill-equipped to ...
What is an alien species? An alien species is any non-native plant, animal or other organism introduced into a place that was never part of its natural range. Sometimes known as invasive, introduced ...
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