Animals and plants that have evolved on island ecosystems are vulnerable to introduced pests. In the case of insects, new species that hitch rides on ships can compete with the native species who often lack defenses or behaviors that can stop invasive species. To make sure, all clothing and bags have to be frozen before use, and only used on one island. While it may be inconvenient, these precautions help to preserve insect communities that are found nowhere else on earth. All rights reserved .
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