The mantle is essential for life on Earth for several reasons:
: The mantle acts as a thermal blanket, slowly releasing the primordial heat from Earth’s formation and the radioactive decay of elements, maintaining the planet's internal temperature balance. Earth’s mantle is
: Extending from the crust to about 410 km deep, it includes the lithosphere (the rigid top layer) and the asthenosphere , a semi-fluid zone that allows tectonic plates to slide. The mantle is essential for life on Earth