Which layer of the earth is composed of iron and nickel, and has two main parts called the outer and the inner ? a. the mantle c. the crust b. the core d. the lithosphere

What is the "great pacific garbage patch"? (a) a large area of marine debris concentrated by rotating ocean currents (b) a large area around the pacific rim where debris collects from natural disasters such as tsunamis (c) an area in the pacific ocean where trash is intentionally dumped due to lack of landfill availability (d) a large trash dump located in hawaii

The oldest seafloor in the atlantic ocean is located closest to the edge of the continents. explain how this age can be used to figure out when north america first began to separate from europe

Deep-ocean and are created by convergent boundaries of an ocean and continental crust