Many scientists infer that people 's lives will change dramatically in the next 50 years because of humans ' greedy .
Many scientists infer that people 's lives will change dramatically in the next 50 years because of humans ' greed .
Many scientists infer that people 's lives will change dramatically in the next 50 years because of humans ' greed .
이 문장의 문법 수정: Many scientists infer that people 's lives will change dramatically in the next 50 years because of humans ' greedy . 산출: