Ключевые слова: activist, african, altruism, area, assistance, bag, charity, cheerful, cleaning, community, cooperation, ecology, environment, environmentalist, european, friends, friendship, garbage, girl, green, group, helping, horizontal, leisure, lifestyle, man, nature, outdoors, park, participation, person, plastic, recycling, responsibility, rubbish, service, smiling, social, summer, team, teamwork, togetherness, trash, volunteer, welfare, work,