They form only above snowlines at higher altitudes where so cold and dry snow doesn't melt and accumulates.
Answer:
Seafloor spreading occurs at Feature A and subduction occurs at Feature B
Explanation:
On the image we can see two contrasting features. One of them gives rise to the new crust, while the other destroys the old one. Feature A is a mid-ocean ridge. This is the place where there's a divergent plate boundary. The gap left behind the plates that move away is filled with magma, which constantly piles up new layers that are becoming new crust. It is hear where the ocean floor is spreading. Feature B is the opposite, it is a subduction zone. In the subduction zones, one of the plates moves below the other plate, reaching the mantle layer, getting melted and destroyed. On the place of the boundary, there's a deep valley that forms in the gap, known as an ocean trench.
The correct answer is - warmth and humidity.
The warm and humid conditions are very well known for their ability to dispose most of the things very quickly, and the undeveloped fingerprints are no exception. They will lose their initial form very quickly in this type of conditions, and will be totally unrecognizable, and if left in conditions like that, in a relatively short space of time they will not be of any usage of all.
The worst-case scenario at a nuclear power plant occurred at Chernobyl.
