Ключевые слова: agricultural, background, cement, concept, concrete, crack, cracked, driveway, ecology, environment, farming, flora, flower, green, grow, growth, killer, leaf, life, little, nature, new, plant, purple, seed, seeding, sidewalk, small, soil, spring, sprout, tracheophyte, tree, undesireable, undesired, unwanted, vascular, violet, weed, weeds, wild, young,