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High School Biology: From the First Organism Onward - The Evolution of Multicellular Life (Fill in the blank)
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High School Biology: From the First Organism Onward - The Evolution of Multicellular Life (Fill in the blank)
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8 Questions

1. The Paleozoic Era began with the Cambrian ____________.

2. The Mesozoic began with the supercontinent called ____________.

3. The Cenozoic Era is the age of ____________.

4. During the late Precambrian, continents drifted and ____________ levels in the atmosphere rose and fell.

5. The Mesozoic Era is the age of ____________.

6. In a mass ____________, many or even most species abruptly disappear from Earth.

7. Nearly ____________ of Earth’s history passed before multicellular life evolved.

8. The Paleozoic Era ended with the Permian ____________.

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