Complex sentence: Often the reason for the use of log scales is that the graph's author wishes to display vastly effects of vastly different scales on the same axis, without log scales comparing quantities such as 10 ^ 3 versus 10 ^ 9 becomes impractical from a visual perspective.
Split into simpler sentences: Often the reason for the use of log scales is that the graph's author wishes to display vastly effects of vastly different scales on the same axis. Without log scales, comparing quantities such as 10 ^ 3 versus 10 ^ 9 becomes impractical from a visual perspective.