D. To convert sound waves into mechanical waves.
Answer: mid-oceanic ridge
Explanation:
happens at the mid-oceanic ridge where a divergent boundary is causing two plates to move away from one another resulting in spreading of the sea floor. As the plates move apart, new material wells up and cools onto the edge of the plates.
The group that contains only organs in a human body is: heart, brain, and skin.
viruses today are thought of as being in a gray area between living and nonliving