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The half-life of an element is important for determining the _______ of a rock.
A. relative age
B. absolute age
C. mineral makeup
D. decomposition rate

Is it B??

Which one of the following is not left in the land as a result of continental glaciers?
A. Eskers
B. Loess
C. Drumlins
D. Erratics

is it A?

  • Science - ,

    I agree with 1 as B.
    I don't think A is right for 2; look up the definition of each. A, C, and D definitions talk about glaciers; B does not.

  • Science - ,

    i believe number 2 is D. erractics

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