Loading ad... muna Member for 3 years 11 months Age: 12-14 Level: 6 Language: English (en) ID: 377708 23/09/2020 Country code: AE Country: United Arab Emirates School subject: العلوم (1059325) Main content: مقارنة بين الأنظمة (1154646) From worksheet author: مقارنة بين الأنظمة المغلقة و المفتوحة Loading ad... Share / Print Worksheet Google Classroom Microsoft Teams Facebook Pinterest Twitter Whatsapp Download PDF Loading ad...