The definition of a solution is a homogeneous mixture of two or more substances. This means that the components of the solution are evenly distributed throughout the mixture. Air is a solution, as it is a mixture of several gases including nitrogen, oxygen, argon, and carbon dioxide. These gases are evenly distributed throughout the atmosphere, and the air we breathe is a combination of these gases. The air we breathe is essential for life, as it contains oxygen which is necessary for respiration. The air we breathe also contains other gases which help to regulate the temperature of the Earth and provide a protective layer from the sun’s harmful radiation. Air is a solution that is essential for life, and it is made up of several gases that are evenly distributed throughout the atmosphere.