Question

Fill in the blanks to complete the passage.

Through the process of

, old, dense crust is pushed toward a deep-ocean

. There, it sinks under lighter crust. It returns to molten rock, becoming part of the

again.

Answer 1

Through the process of subduction , old, dense crust is pushed toward a deep-ocean trench . There, it sinks under lighter crust. It returns to molten rock, becoming part of the mantle again.

Step-by-step explanation:

Answer 2

subduction, trench, mantle

Step-by-step explanation: