What lines of evidence support the hypothesized cause of the K-Pg mass extinction? Select all that apply.
shocked quartz found near the event location
tektites and microspherules found in the K-Pg boundary layer
None of the other answers fit.
evidence of glacial activity dated at 66 million years ago
the large Chicxulub crater located on the Yucatán peninsula dated at 66 million years old
significantly increased iridium concentration in the K-Pg boundary layer