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Russian has many different grammar rules which are completely unknown to most English speaking people. In English if we want to refer to an object in a sentence, we may use direct or indirect article (e.g...

The genitive case is one of the most commonly used cases in the Russian language. Luckily for Russian scholars, it is fairy easy to master its usage:

1. To denote possession - книга Машы (lit. t...

Pathogen: any microorganism (bacteria or virus) that can cause disease. anything that has a 'path' to disease.

 I will explain that often the question gives a clue to the answer to the question. Th...

Consider NaCl and CCl4, the first compound is dominated by ionic bonding, whereas the second covalent.

Ionic bonding involves a cation (Na+) and an anion (Cl-), where strong electrostatic interacti...

The first thing you need to do to make this easier is to multiply out the brackets so that you can then move all the 'x' terms to one side and all the numbers to the other side. It would become: 7x=4x-32 ...