Why is air pollution an increasing problem in developing countries? question 20 options: the global distillation effect brings more pollutants into developing countries than they produce locally. in the desire to industrialize rapidly, less expensive but outdated, more polluting technologies are being adopted. developing countries are located in areas that tend to suffer from thermal inversions. most people in developing countries now own two cars exacerbating urban heat islands and dust domes.

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].