Ocean basins are characterized by a central consisting of submarine hills that rise gradually to a rugged central zone delineated by a narrow, trench-like feature called a(n)

Mid-oceanic ridge and a ridge

Explaination:

The mid ocean ridge is where seafloor spreading takes place along a divergent plate boundary.

They are usually formed by plate tectonics with a depth of about 2,600 meters (8,500 ft) and rises about two kilometers above the deepest portion of an ocean basin.

A rift represents a lowland region that forms where Earth's tectonic plates move apart, or rift. An example is the Rhine rift valley in Germany.

question

which are human systems?

the amazon rain forest

the appalachian trail

the george washington bridge

the himalayas

the hoover dam

the north american free trade agreement