Answer: . Seafloor spreading creates new crust. Subduction destroys old crust.
Explanation:
The denser lithospheric material then melts back into the Earth's mantle. The two forces roughly balance each other, so the shape and diameter of the Earth remain constant.
Answers & Comments
Answer: . Seafloor spreading creates new crust. Subduction destroys old crust.
Explanation:
The denser lithospheric material then melts back into the Earth's mantle. The two forces roughly balance each other, so the shape and diameter of the Earth remain constant.