The atmospheric gas accumulated through radioactive decay.

a. argon

b. ozone

c. carbon dioxide

d. oxygen

e. nitrogen

Select the natural regions. delta denver forest georgia north america plateau stream

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

Sketch, label, and explain the rock cycle. your sketch should contain descriptions of all eight key processes. in addition, use sentences (no sketch) to describe why a rock might not experience the entire rock cycle.