dry environments result in narrow tree-growth rings
cotylelobium_melanoxylon is tree. sea_lettuce is green_algae. heavily_wooded_area has lots_of_trees green_longhorn is insect. koeleria_glauca is grass. green_longhorn is not insect. shark has rough_skin cotylelobium_melanoxylon is not tree. sea_lettuce is not green_algae. mowing_grass has linear_complexity