As evidenced by ancient Russian chronicles, Svyatoslav is the only son born from the union of Grand Duke Igor with Princess Olga. He spent most of his short life in combat
Disappearing peoples is a global problem, but it has not appeared now. This is a natural historical process. Over the entire history, up to the 19th century, more than 500 peoples disappeared, and for the remaining period to the present, more than a thousand, which indicates its acceleration. This is a natural process. It is associated with many factors in the development of mankind, and it is impossible to stop it
The article briefly describes the structure of the atom and the nucleus of elements. Examples are given for determining the number of electrons, protons, neutrons, and the nuclear charge based on the ordinal number of the element. the difference between absolute, relative atomic mass and mass number is indicated. Examples of problems are given in the solution of which the mass number is used
Fun is a very ancient word. So far, we can only state a fact, and the evidence is ahead. Yes, and the noun occupies us only because we have to consider and analyze the adjective "funny" - this is the main task. But let's start with history
