Which of the following causes the different densities of oceanic crust and continental crust?
a. ocean depth
b. types of rock
c. age of the rock
d. temperature of the rock

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No, because you are more likely to see volcanic mountains where magma is rising along the mid-ocean ridge spreading to the center.

The customers always compliment the pretzels alex makes, saying they taste better than any other pretzels. but alex uses extra ingredients on each pretzel, making the cost per pretzel go up and the profit go down. in a paragraph of no less than 125 words, give alex some constructive feedback on his performance.