Every time the earth travels around the sun, it completes one

Compare demographic and environmental effects of the columbian

Distance that lewis and clark traveled from st. louis to ft. clatsop near the pacific ocean.

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