2m 38s: longueur
2340Nombre de vues
2Évaluation

P R E V I E W C L I P: Research scientists throughout the world are helping farmers implement sustainable food production systems. Key concepts that underline this research are ecosystem preservation and natural resource conservation. Food production systems touch nearly every aspect of life -- from farms and industrial processing plants to markets, grocery stores and the dinner table. Students will learn about various sustainable 'food cycle' systems. http://www.ssrvideo.com/