Ключевые слова: africa, african, america, atmosphere, awareness, balance, biology, biotechnology, change, chemical, chemistry, climate, climate change, conceptual, condition, contamination, dangerous, desert, disaster, earth, ecological, ecosystem, effect, environmental, future, global, global warming, globe, growth, healthy lifestyle, heat, horizontal, ideas, impact, inspiration, no people, photo, picture, planet, pollution, protection, recycling, renewable, united states, usa, warming, weather, world,