1. the five boxes below represent a geologic cross-cut with five layers (a is on top and e is on the bottom). the types of rocks are listed on the right side. in each box, write the appropriate type of rock and explain the answer in relation to the history of the earth’s atmosphere.

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

step-by-step explanation:

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c

step-by-step explanation: