Respuesta :
Answer:
Explanation:
Convection currents are formed in Earth's mantel, which contains magma. Magma is lava rock. Magma irrupts due to the heart from Earth's interior.
NOTE!
Im not 100% sure on the last blank!
Answer:
1 mantle 2 molten 3 not sure but i think its expands and contracts i honesly dont know
Explanation: