The Great Wall of China is miles long O A. 3,000 B. 5,000 O C. 2,000 O D. 4,000 ​

Which of the layers of the earth has the following three characteristics? i. it is a solid outer layer. ii. it is between 3 and 30 miles thick. iii. it is separated into plates. a. the outer core b. the inner core c. the mantle d. the crust