Ключевые слова: activist, assistance, beach, challenge, change, charity, check, choice, clean, close up, coordinator, deliberate, education, environment, forest, foundation, garbage, garbage bag, help, landscape, nature, nonprofit, opportunity, organization, outside, participation, program, purity, river, sand, sanitary, selfimposed, service, spontaneous, stones, surrounding, teenager, thankful, top view, trash, unpaid worker, volunteer, will,