What are the statements saying
They are found in the tundra regions of Eastern and central Europe. Mostly covered in permafrost, in some areas this frost has melted. The Drunken forest is the reference to the shallowness of where the trees roots are and then the trees start to tip over (Like a drunk man LOL). But within the Northern Hemisphere it alters the life around it and also destroys roads and buildings
The best bibliogaphic entry would probably be: Smythe, Clark. <em>Unsinkable: Folly on the Titanic</em> Little, Brown: New York, 1976.
That is because it seems to be a book about the Titanic itself, whereas the other ones have to do with:
- topics which are less directly related to the subject-matter (the first entry is about maritime laws and the third one is about the animal and plant populations of the lands near the North Pole),
- personal, relative accounts of the events (like the fourth entry, which is an autobiography of a survivor and therefore describes the wreck through the character's own perspective) as opposed to more factual material.
They can occur anywhere between the Earth's surface; about 700 kilometers<span> below the surface.</span>