I don't know much about the Saguaro community but it's probably so that they can protect themselves or perhaps because of the sort of small animals that are there? So that they can feed themselves.
In the winter months, gale storms in Svalbard can reach wind speeds of 130 km/h. Accompanied by or following snowfall, such storms can reduce visibility dramatically, more so in the winter months of the polar night. During these storms, travel is not advised. — The Documentarian
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