To Apply the Concept of Chronosequence, Ecologists Assume That

To apply the concept of chronosequence, ecologists assume that

A) most terrestrial communities go through the same seral stages.
B) the layers in pond sediments are stacked from the youngest at the top to the oldest at the bottom.
C) older sites and younger sites have undergone the same disturbances.
D) wider tree rings represent periods of rapid population growth.