noun retÂ·roÂ·gresÂ·sion \Ëre-trÉ-Ëgresh-Én\. : a reversal in development or condition: asa: return to a former and less complex level of development or organizationb: subsidence or decline of symptoms or manifestations of a disease.
Habitat. Slime molds live in somewhat variable habitats all over the world. Generally slime molds live in damp areas of vegetation. They live under rotting logs and damp leaves. Some of the other habitats that slime molds will inhabit include water such as tropical fish tanks.
Slime mold or slime mould is an informal name given to several kinds of unrelated eukaryotic organisms that can live freely as single cells, but aggregate together to form multicellular reproductive structures. Slime molds were formerly classified as fungi but are no longer considered part of that kingdom. Although not related to one another, they are still sometimes grouped for convenience within the paraphyletic group referred to as kingdom Protista. More than 900 species of slime mold occur all over the world. Their common name refers to part of some of these organisms' life cycles where they can appear as gelatinous slime.