Plate tectonics is the theory explaining the structure of the earth's crust and the resulting features and processes of the interaction of the plates that move slowly over the underlying mantle. a mid-ocean ridge is a feature that results in ocean to ocean divergent boundary zones. how is a mid-ocean ridge a resulting feature? a. the plates are moving in a zigzag formation, creating shallow earthquakes which forms a mid-ocean ridge. b. mid-ocean ridges are not resulting features of ocean-to-ocean divergent boundary zones. c. the plates are moving towards each other, which causes the crust to buckle and push upwards or sideways which forms a mid-ocean ridge. d. the rising convection current below the oceanic lithosphere lifts the lithosphere as the plates move apart.

D. The rising convection current below the oceanic lithosphere lifts the lithosphere as the plates move apart.

Explanation:

Plate tectonic is a theory that explains how tectonic plates are moving, These plates are diverging , converging or even moving past each other. The Interaction of this earth tectonic plates cause a slow movement on the underlying mantle .

The boundary where plates moves apart is known as the divergent boundary. The divergent boundary is prevalent in the oceanic crust . This boundary mostly involve ocean ocean separation or spreading. Mantle materials from the mantle region upwells to the sea floor during spreading through the mid oceanic ridge. The rising convection current below the oceanic lithosphere or crust lifts the crust and causes a spreading or moving apart of the plate. The mid oceanic ridge is usually formed and this where mantle materials are likely to be exposed to the sea floor.  

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added