The Japanese Police Department confirmed that the death toll today had risen to 8,649 due to the big earthquake. According to the official figures, there are 13,262 people missing, 21,911 people missing or dead, 2644 people injured.
death tolldeath toll = 因事故而死亡的人數如果你說 the number of dead people，就單純指死亡的人數，跟事故沒有關係
這是一個連環問題: 燃燒石油導致二氧化碳增加，二氧化碳增加導致溫室效應，溫室效應導致冰層融化、海平面上升。 (請填空)
This is a chain of problems. Burning oil leads to increase in carbon dioxide, which leads to the greenhouse effect, which leads to melting of glciers, which leads to rising sea levels.