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How are earthworms not extinct?

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Of these species, one, the Lake Pedder Earthworm (Hypolimnus pedderensis) is thought be extinct – it used to live by Lake Pedder in Tasmania but has not been seen since the site was flooded for a hydroelectric power station. read more

A few reasons come to mind: 1. They have some rather modest requirements, like oxygen, some organic matter, and a moist soil. They don’t need specialized food like leaves from milkweed, bamboo, or eucalyptus. read more

The worms in question are primary engineers of their environment. They are considered keystone species because, as detritivores, they alter many different variables of their ecosystem. Of the 182 taxa of earthworms found in the United States and Canada, 60 (33%) are introduced species. read more

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