acid, adversity, aging, branches, clouds, condition, dangerous, dark, dead, death, decay, decline, destruction, die, disease, dramatic, dry, dying, eerie, end, environment, environmental, future, gloomy, gray, grey, industry, issues, lifeless, mood, moody, mystery, nature, old, plants, pollution, process, rain, religion, sick, silhouettes, spirituality, spooky, storm, struggle, threat, trees

  

oil spill in the shape of a...	silhouette of power plant with...	dead tree	group of dead trees on a top...
silhouette of branches	alone tree	global warming the sun...	birch in sunlight