Continental crust grows, recycles, and evolves by direct means of both, and
seafloor spreading and terrane accretion
seafloor spreading and hot spot magmatism
seafloor spreading and subduction magmatism
terrane accretion and subduction magmatism
earthquakes and volcanism

seafloor spreading and subduction magmatism

Explanation: Continental crust are termed as the crust destroyed by plate tectonic process mostly.Continental crust usually lies above sea level and because of this existence of land life to evolve from marine life possible.

Seafloor spreading is a type of process in which tectonic plate of Earth's lithosphere separate from one another.  Subduction is also a process related with continental crust that occurs when tectonic plates collide with each other rather than getting apart.