Okooko osisi, dị ka otu n'ime ụlọ ọrụ mmepụta ihe, anatala nlebara anya mgbe niile. Ya mere, Chengfei Greenhouse ewepụtala griin haus nke ọtụtụ ihe na-ekpuchi nke ihe nkiri na iko, na-emebi njedebe oge nke uto ifuru na inweta mmepụta na inye ifuru kwa afọ. Nyere ndị na-akụ osisi aka ịbawanye mmepụta ifuru na ego ha na-enweta.