یہ Publication Issue آپ کی زبان میں موجود نہیں ہے, میں دیکھنے: English (en),
یا گوگل کے ترجمہ کا استعمال کرتے:  

Students will demonstrate their understanding of ways to improve and conserve soil as they email an ECHO intern in Africa, respond to a quote from the 19th century warning of civilizations’ impact on soil, and investigate the “Dust Bowl” soil disaster in U.S. history.