context: In the late 20th century a new concept was added to those included in the compass of both structure and function, the consideration of sustainability, hence sustainable architecture. To satisfy the contemporary ethos a building should be constructed in a manner which is environmentally friendly in terms of the production of its materials, its impact upon the natural and built environment of its surrounding area and the demands that it makes upon non-sustainable power sources for heating, cooling, water and waste management and lighting.
question: একটি বিল্ডিংকে পরিবেশবান্ধব হিসেবে বিবেচনা করতে হলে কোন ধরনের বিদ্যুতের উৎসের অতিরিক্ত ব্যবহার করা উচিত নয়?
answers: non-sustainable power sources