The answer is B.
During plate tectonics, cracks may occur in the earth crust that causes magma to rise up from the mantle. The cracks may also cause cracks to form on the crust that makes outlet channels for the magma in magma chambers. These result in volcanic eruptions on the surface of the earth that form volcanic features such as mountains.
New seafloor is the answer
Answer: It evaporates and recirculates through the rain cycle, so we do get it back
Explanation:
