Final answer:
Solifluction mainly occurs in the tundra, where the cyclic thawing and freezing of soil over impermeable creates the conditions necessary for this process to take place.
Step-by-step explanation:
The process of solifluction mainly occurs in the tundra. This is because in the tundra, the ground is subjected to cycles of freezing and thawing, which creates a flow of water-saturated soil and detritus over the impermeable layer beneath the surface. During the brief summer season, the top layer of the thaws, creating a soggy and unstable ground that shifts downhill, even on gentle slopes.
In contrast, tropical rainforests have very different conditions, including deep, well-drained soils and a lack of , which are not conducive to solifluction. Similarly, underwater environments, midlatitude regions, and universal conditions do not typically exhibit the specific requirements for solifluction to occur.