Ключевые слова: 253300028, 3035 years, 30s adult, alternative energy, assistance, caucasion, cooperation, day, daytime, environment, environmental issues, fitting, four people, green issues, group, group effort, hard hat, health and safety, heavy, holding, job, lifting, man, men, mid adult, mid adult man, outdoors, outside, people, photovoltaic, positioning, real people, roof top, solar, solar cell, solar energy, solar panel, solar power, strength, team, team work, teamwork, togetherness, workers,