• What is at least one way that geologists use individual crystals to learn something about the timing or cycles of volcanic eruptions?

Answer such tools are fail proof;

Ithink it’s a but it might be wrong so sorry

See diagram.we use washers to get the area and we will be integrating with respect to xouter radius is the  distance between y = e^x and y = -1    inner radius of washer is the distance between y = 1 and y = -1    the area of one cross-section of a washer is    solid lies between x = 0 and x = 2. the volume is    if you need this expanded, then    the question doesn't say to evaluate, so we're done.