Education, self-education and personal growth - methods, lessons

Great and rich is our Russian language! Indeed, one can write legends about the richness of our native language. We can come up with several derivatives from just one word. But there are still dictionaries where the number of forgotten native Russian words is very large

Each of us, even if only in pictures, has seen frogs and lizards, crocodiles and toads - these animals belong to the classes Amphibians and Reptiles. But how to distinguish who is who? What is the difference between amphibians and reptiles and how significant are these differences?

Rurikovichi, whose genealogical tree includes almost twenty tribes of the rulers of Russia, are descended from Rurik. This historical character was born, presumably between 806 and 808 in the city of Rerik (Rarog). In 808, when Rurik was 1-2 years old, the possessions of his father, Godolub, were captured by the Danish king Gottfried, and the future Russian prince became half an orphan. Together with his mother Umila, he ended up in a foreign land, and nothing is known about his childhood

The article is devoted to the processes of aging and corrosion of metals. The features of these phenomena, their types and methods of prevention are considered