what kind of regeneration abilities does it have?
They have the ability to regenerate lost segments, but this ability varies between species and depends on the extent of the damage.
Earthworm
 have the ability to regenerate lost segments, but this ability varies between species and depends on the extent of the damage. 
name two small animals that have their homes in the soil Earthworms and Snails what is a habitat? It is the type of natural environment in which a particular species of organism lives. how are environmental factors related to it? Animal communities are reliant on specific types of plant communities. how many different types are there? Terrestrial habitat, Freshwater habitats, Marine habitats, deserts which favours the presence of amphibians etc can you please give an example of the environmental factors that you mentioned Terrestrial habitat types include forests, grasslands, wetlands and deserts, Freshwater include rivers, streams, lakes, ponds, marshes etc, Marine include brackish water, estuaries, bays, the open sea, the intertidal zone and further variations include rock pools, sand banks, mudflats etc. and what about the second type? They  include rivers, streams, lakes, ponds, marshes and bogs. are there microhabitats? Yes, every habitat includes large numbers of microhabitats. how does the first animal that lives in the soil move? They crawl faster primarily by taking longer "strides" and a greater frequency of strides.
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Earthworm [SEP] Regeneration
Earthworms have the ability to regenerate lost segments, but this ability varies between species and depends on the extent of the damage. Stephenson (1930) devoted a chapter of his monograph to this topic, while G.E. Gates spent 20 years studying regeneration in a variety of species, but "because little interest was shown", Gates (1972) published only a few of his findings that, nevertheless, show it is theoretically possible to grow two whole worms from a bisected specimen in certain species. Gates's reports included: An unidentified Tasmanian earthworm shown growing a replacement head has been reported.