Page 155 - Science Course 3 (Book 2)
P. 155
Mo11-L7a: Major Events During the Cenozoic Era
Climate changed at the close of the Pleistocene epoch 10,000 years ago.
HOLOCENE
20
Medieval Warm Period
Average Global Temp. (0C) 15
10 Little Ice Age
18 16 14 12 10 8 6 4 2 0
Thousands of Years Before Present
The Holocene epoch was warmer and drier, and the mega-mammals that lived during the Pleistocene became
extinct.
Some scientists suggest that mega-mammals could not adapt fast enough to survive the environmental
changes.
Key Concept SUMMARY
Major Events During the Cenozoic Era Major Events During the Cenozoic Era
The mega-mammals that lived during most of
How did the climate change at the end of the the Cenozoic era are extinct.
Pleistocene epoch?
Glaciers extended well into North America
during the Pleistocene ice age.
Lucy is a 3.2-million-year-old human ancestor.
147
