Problem

Threatened species of Annelida

Other Names:
Endangered species of segmented worms
Annelids under threat of extinction
Nature:

The 7,000 - 8,000 species of segmented worms constitute a major phylum of the animal kingdom which is divided into three classes. Marine worms (5,000 species) play an important role in turning over much of the marine sea-floor sediment and are important in the region of domestic outfall sewers. Earthworm (3,250 species) turn over and aerate the surface soil. Leeches form the third class. It is not known how many of these species are endangered by different forms of pollution.

Related Problems:
Worms as pests
Leeches as pests
Problem Type:
C: Cross-sectoral problems
Related UN Sustainable Development Goals:
GOAL 15: Life on Land
Date of last update
16.04.2019 – 16:55 CEST