Which of the following statements about Russia is true?
A.
Russia has the world’s largest population.
B.
Russia is the largest country in the world with regard to land area.
C.
Russia has the highest GDP per capita in Europe.
D.
Russia has the highest life expectancy in Europe.

Its decreasing because of illnesses

Amath expression is a collection of one or more terms, which are separated by the signs ( + , - , x , / ).example :   8+b8+b  or  a−3a−3in algebra, an equation is a mathematical statement with two expressions where, each expression is separated by an equal (=) sign. variables can be present on both the sides of the equality (=) sign and we use letters to denote such variables.example 1:   x=4+2x=4+2  , [here, we can observe that the variable is present only on one side of the equation].example 2:   2x+3=x+42x+3=x+4  , [here, we can observe that the variables are present on both side of the equation].

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