Question

Using palynological data, Haynes and Mehringer concluded that the climate at the Lehner Clovis site in southeastern Arizona 11,000 years ago was:
a. Only slightly wetter and cooler than today, followed by a rapid shift toward drier conditions.
b. Only slightly drier and warmer than today, followed by a rapid shift toward wetter conditions.
c. Much drier and warmer than today; only a large shift in temperature and precipitation would have caused such a different environment at the site.
d. Much wetter and cooler than today; only a large shift in temperature and precipitation would have caused such a different environment at the site.

Answer

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