Q. As regarding the UNESCO World Heritage Sites, how much of The Great Wall Of China has disappeared due to human activities & Natural Erosion in percentage terms?
Answer of this question "As regarding the UNESCO World Heritage Sites, how much of The Great Wall Of China has disappeared due to human activities & Natural Erosion in percentage terms?", here are 4 choices for this question : 50%, 30%, 20%, 10%. Answer Is " 30%".