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Air is very important to human survival because it contains oxygen, which humans need to live.
The what?
Larger animas hunt bears in the winter
It is ore
So they can smell out pollen and food.
Soil contains most of the silica. It is very useful for man.
If your intelligent enough, almost anything can be useful in a survival situation. You just need to know how to use it.
maybe copper
penis
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Many survival kits include nylon cord, string, twine or rope. In many survival situations these items are extraordinarily useful from building snares to hanging your cloths to dry cord/rope is a big yes in a survival kit.