Ключевые слова: arrows, boxes, cleaning, eco, ecologic, ecological, environment, environmental, forest, friends, friendship, girls, green, list, men, nature, outdoors, park, people, plastic, recycle, recycling, relationship, resource, responsibility, rubbish, sign, sustainable, symbol, textbook, together, togetherness, trash, trees, volunteering, volunteerism, volunteers, waste, women, write, young adult,