'Most geologists believe the earth's core to be mainly a heavy compressed lump of this metal'
iron
TAKING YOUR LUMPS: Most geologists believe the earths core to be mainly a heavy compressed lump of this metal
Most geologists believe the earth's core to be mainly a heavy compressed lump of this metal
Most geologists believe the earth's core to be mainly a heavy compressed lump of this metal
TAKING YOUR LUMPS
iron
TAKING YOUR LUMPS