the spruce sapling growing from the rotting stump

bark biosphere birds branch bush canopy cone coniferous cycle deciduous duff durmitor eco ecology energy environment evergreen fauna fir flora forest grass green habitat heritage juniper knot leaves life light litter lumber national needle needles nest oxygen park photosynthesis pine rain resin root rotten sapling season shrub soil spruce stump summer sun symbiosis tall timber tree trunk underwoods water winter world zone endemic insects