True possums are found only in Australia and some of the islands of Oceania. They are quite different to the North American opossum. Possums live in trees hollows and logs in their natural habitat, which is bushland, wet sclerophyll forest and tall eucalypt forest, and temperate rainforest.
Dissect definition, to cut apart (an animal body, plant, etc.) to examine the structure, relation of parts, or the like. See more.
retraction, n 1. a drawing or shrinking back; the laying back of tissues to expose a given part. n 2. distal movement of teeth; a distal or retrusive position of the teeth, dental arch, or jaw. retraction, gingival, n laying back of the free gingival tissue to expose the gingival margin area of a preparation by mechanical, chemical, or electrical means.