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Questions and Answers
What is the name of the massive supercontinent that formed between 320 million and 195 million years ago?
What is the name of the massive supercontinent that formed between 320 million and 195 million years ago?
Pangaea
How many continents did Earth have when Pangaea existed?
How many continents did Earth have when Pangaea existed?
One
What are the three subdivisions of the Precambrian eon?
What are the three subdivisions of the Precambrian eon?
Hadean, Archean, and Proterozoic
Name the first geological time period of the Paleozoic Era.
Name the first geological time period of the Paleozoic Era.
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What is the meaning of the Phanerozoic eon?
What is the meaning of the Phanerozoic eon?
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What were some of the animals that evolved during the Cambrian period?
What were some of the animals that evolved during the Cambrian period?
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What was the primitive plants that began to appear on land during the Cambrian period?
What was the primitive plants that began to appear on land during the Cambrian period?
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What was the most remarkable biological event during the Silurian period?
What was the most remarkable biological event during the Silurian period?
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What group of fish first appeared during the Silurian with powerful jaws lined with bladelike plates?
What group of fish first appeared during the Silurian with powerful jaws lined with bladelike plates?
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What were the first terrestrial arthropods that appeared during the Devonian period?
What were the first terrestrial arthropods that appeared during the Devonian period?
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During which geological time period did the massive supercontinent Pangaea exist?
During which geological time period did the massive supercontinent Pangaea exist?
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Which eon is subdivided into Hadean, Archean, and Proterozoic?
Which eon is subdivided into Hadean, Archean, and Proterozoic?
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Which eon is associated with the increase of free oxygen as a result of photosynthetic action by primitive life forms in the sea?
Which eon is associated with the increase of free oxygen as a result of photosynthetic action by primitive life forms in the sea?
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What is the meaning of the Phanerozoic eon?
What is the meaning of the Phanerozoic eon?
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Which eon is known for the formation of volcanic belts and marine rocks with fossils of microscopic bacteria and algae?
Which eon is known for the formation of volcanic belts and marine rocks with fossils of microscopic bacteria and algae?
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What type of plants began to appear on land during the Cambrian period?
What type of plants began to appear on land during the Cambrian period?
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Which group of fish first appeared during the Silurian period with powerful jaws lined with bladelike plates?
Which group of fish first appeared during the Silurian period with powerful jaws lined with bladelike plates?
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What did the first terrestrial arthropods, including wingless insects and the earliest arachnids, appear during?
What did the first terrestrial arthropods, including wingless insects and the earliest arachnids, appear during?
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What was one of the most remarkable biological events during the Silurian period?
What was one of the most remarkable biological events during the Silurian period?
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What type of plants were present on land before the second largest mass extinction at the end of the Cambrian period?
What type of plants were present on land before the second largest mass extinction at the end of the Cambrian period?
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