What country's were involved in the ussr?

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

What is the difference between the formation and characteristics of intrusive igneous rock and extrusive igneous rock?

Which physical law states that all orbits are conic sections?