Ключевые слова: activity, agriculture, air pollution, background, concept, dig, dust, earth, earth day, ecology, environment, environmental, forest, forestation, fresh, garden, gardening, green, grow, growing, growth, hand, helping, leaf, life, man, nature, new, people, plant, planting, plants, preserve environment, process, protection, reforestation, regeneration, replantation, responsibility, root, sapling, save the world, seed, seeding, soil, spring, tree, trees, young,