For protection from the outside elements & harmful insects I would assume. Unless that's already obvious & they wanted a more in-depth answer.
Answer:
Nitrogen is a critical limiting nutrient in many systems, including forests, wetlands, and coastal.
You must pack food that has high concentrations of fat and protein. Food like granola bars and canned meat are a good source of energy and heat. This is because the body breaks this food down easily converting it into usable energy. Though some people would suggest that you pack food that are high in carbohydrates, fats and proteins are long-term sources of energy that you would need for your hiking trip.
Answer:
Actually, The ionic charging of : alkali is +1 alkaline earth metals is +2 aluminum is +3. That is the use periodic table to recall the lonic charge of an alkali metal, an alkaline earth metal, or aluminum
Explanation: