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.
Earthworm
Earthworms crawl faster primarily by taking longer "strides" and a greater frequency of strides. 
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.
wiki:16879843
Earthworm [SEP] Movement
On the surface, crawling speed varies both within and among individuals. Earthworms crawl faster primarily by taking longer "strides" and a greater frequency of strides. Larger "Lumbricus terrestris" worms crawl at a greater absolute speed than smaller worms. They achieve this by taking slightly longer strides but with slightly lower stride frequencies. Touching an earthworm, which causes a "pressure" response as well as (often) a response to the dehydrating quality of the salt on human skin (toxic to earthworms), stimulates the subepidermal nerve plexus which connects to the intermuscular plexus and causes the longitudinal muscles to contract. This causes the writhing movements observed when a human picks up an earthworm.