Question

what role did heat from radioactive decay play in forming earth’s layered structure? (1 point)
the heat melted the early earth, allowing heavy materials to sink and light ones to rise.
radioactive elements released cold gas that hardened into the planets core.
the heat pushed all elements to the crust, where they cooled into rock.
the decay caused magnetic forces that moved continents into place.

Explanation:

Heat from radioactive decay in the early Earth melted it. This allowed density - based separation with heavy materials sinking to form the core and light ones rising to form the crust and mantle.

Answer:

The heat melted the early Earth, allowing heavy materials to sink and light ones to rise.