Why does oceanic crust sink beneath continental crust at convergent boundaries?

Oceanic crust is denser than continental crust.

Explanation:

The density difference arises because of partial melting.

When you partially melt a rock, the lighter minerals melt before the denser ones, so the rocks that form from the melt are less dense than before.

After each cycle of partial melting, the rocks become progressively less dense.

The continental crust is formed more cycles of partial melting than oceanic crusts. As a result, the density of continental crust (2.7 g/cm³) is less than that of oceanic crust (3.3 g/cm³).

Consequently, the denser oceanic crust is subducted below the continental crust at a convergent boundary.

because they want 2 and yea

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles