it is a handy reference for teachers and can be shown to students as well. interesting to read the background that has shaped your life. not everyone’s in love with the idea, though. never had any issues with it once. just building a bigger bathtub is often not the best solution. review: the added error messages were a nice touch. have some additional tips on one, but not the other. when strengthening a natural environment, green city design takes all living things into account, not just the human population. try the recipe as is the first time, and then you can adjust to your taste. 