Wild plants contain almost all the necessary components of food: vitamins, carbohydrates, proteins, fats, mineral salts and water. Especially important is the role of fresh plants as a…
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Determining the height of objects by angular magnitude, by the shadow of the object, determining the steepness of slopes by sight, by comparing the height with the laying, using a plumb line and an officer’s ruler.
In field and field conditions it is sometimes very important and useful to possess the simplest applied methods for determining the height of objects. For example, a tree,…
Extraction of water from ice and snow, water of animal origin, a little about the importance of salt when surviving in extreme conditions.
In winter, water production is somewhat more complicated. Ponds are mostly covered with an insurmountable crust of ice, fontanelles and keys freeze. Drinking water has to be heated…
The chemical composition and nutritional value of birch sap, sap flow, the use of birch sap.
Birch sap contains sugar, as well as small amounts of acid, nitrogenous substances, salts (ash). The sugar content in birch sap may vary depending on various conditions. From…
Mushrooms, their nutritional value, vitamins and minerals contained in mushrooms.
Mushrooms have very useful properties, among which nutritional value comes first. As a food product, mushrooms are located somewhere between vegetables, fish or meat. At the same time,…