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 zinc1

Answer 1: The correct answer is the crust and the upper mantle.

The lithosphere refers to a solid, rocky part of the Earth, that is the Earth's outermost layer. It is comprised of the crust and upper mantle (refer to attached image). The lithosphere is around 100 km deep.

Answer 2: The correct answer is its crust.

The Earth's crust refers to the outermost rocky shell of the Earth where organisms live (refer to second image). The crust is made of solid rocks, including igneous, sedimentary and metamorphic rocks. The Earth's crust is around 30 km deep.

Answer 3: The correct answer is iron and nickel.

The Earth's core refers to the innermost or central part of the Earth. It lies around 2900 km beneath the Earth's surface and is spherical in shape. The Earth's core is comprised of an alloy (mixture) of the metals iron and zinc.It is made of two layers: the outer core and the inner core.   

Ithink it is space that makes up 70 percent