Even though at least one of them occasionally consumes kites, trees are by-and-large the best thing going. I mean, they furnish our planet with oxygen -- the stuff we need to breathe in order to not die -- so they rank up there with fresh water and sunlight. That's why Arbor Day is so important. It's a day where people show their a-tree-ciation by, among other things, supplying Earth with another tree. Plant yourself in front of these comics for a moment to properly motivated yourself to go outside and enjoy some oxygen!