more dense compression sinking on frogs that are more dense
compression is shrinking. frogs has bones compression is not shrinking. megastomatohyla is tree_frog. megastomatohyla is not tree_frog. mixed_forest_e2 is not canopy_closure_moderate. dense_leaved_elodea is waterweed. mixed_forest_e2 is canopy_closure_moderate. ceratophrys is frog. grass_frog is true_frog.