Pleistocene age also knwon as the Ice age. Thereafter, there are many accounts that happened that lead to global warming. One that is true is Global warming began 18,000 years ago as the earth started warming its way out of the Pleistocene Ice Age, B is also correct as well. Forests have also returned but sea levels in fact rose to about 300 feet. Answer then is C.
Diphasic impulses.
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I'd say A. Because the only data we have is that at a 5.4 pH level, flies are not welcome.
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