When out in the wilderness one of the best ways to procure food is by setting traps to catch animals. When food is scarce and your in a survival situation the last thing you want to do is burn up a ton of calories.
What happens if you go exploring somewhere remote like a forest and suddenly the weather changes quickly bringing strong winds and rain? Knowing how to make an emergency survival shelter can be a useful skill that could one day save your life.
Edible plants exist everywhere, and can provide you with the nutrients and calories you need to survive to supplement your diet or when food from hunting and fishing are unavailable. Plants are valuable sources of food because they are widely available and easy to procure.