1. what layers of earth make up the lithosphere?
the crust and the lower mantle
the crust and the upper mantle
the continental crust and the oceanic crust
the upper and lower mantle

2. earth's thin, rocky outer layer is its
core
mantle
outer core
crust

3. earth's core is made of an alloy of
iron and nickel
copper and iron
zinc and magnesium
iron and zinc