21. In the passage, the author is primarily concerned with
searching for an accurate method of dating the Pleistocene epoch
discussing problems involved in providing an accurate picture of the Pleistocene epoch
declaring opposition to the use of the term Ice Age for the Pleistocene epoch
criticizing fanciful schemes about what happened in the Pleistocene epoch
refuting the idea that there is no way to tell if we are now living in an Ice Age
22. The wrong impression to which the author refers is the idea that the
climate of the Pleistocene epoch was not very different from the climate we are now experiencing
climate of the Pleistocene epoch was composed of periods of violent storms
Pleistocene epoch consisted of very wet, cold periods mixed with very day, hot periods
Pleistocene epoch comprised one period of continuous glaciation during which Northern Europe was covered with ice sheets
Pleistocene epoch had no long periods during which much of the Earth was covered by ice
23. According to the passage, one of the reasons for the deficiencies of the early classification of Alpine glaciation is that it was
derived from evidence that was only tangentially related to times of actual glaciation
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