Earthworm (Lumbricus sp.),Its saddle,or clitellum,which secretes an egg-containing cocoon,is at upper left. The earthworms diet mainly consists of organic substances in the soil,and its movement helps to break up the soil and improve its aeration. Earthworms are therefore vital to maintaining the quality of arable soils | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Degginger, E.R. |
Taille de l’image : | 3833 px × 2550 px |
Model Release : | Non requis |
Property Release : | Non requis |
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