Describe the different features of the ocean floor. how do they form?

There is hard, smooth, and rocky

Hard sand forms when something is heavy on top and there is a large of pressure.

Smooth sand is formed when waves and gentle and calm and the water is shallow the waves come over the sand pushing it downwards a small bit creating smooth sand

Rocky sand is formed when rockets are brought in from when the water moves them and they start to stack on each other creating a large amount of the floor to be covered in rocks

i dont know but thats a great qusestion

the boundarys like convergent divergent and transform it causes subduction