the spruce sapling growing out of the stump

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