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245 million years ago all of the land masses were combined to form....
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The continents were all gathered together into one large continent. We call this land Pangaea, one large landmass, also called a super continent.
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In what period (when) did Pangaea exist?
A. Permian (225 million years ago) B. Triassic (200 million years ago) C. Jurassic (150
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The correct answer is A. Permian (225 million years ago).
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suppose a rock's chemical composition is analyzed and is found to contain 5x more potassium atoms than argon atoms. When did the
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Potassium-40 (40K) is a radioactive isotope of potassium which has a very long half-life of
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When did the first multicellular organisms evolve?
Question 3 options: 100,000 years ago 1 million years ago 500 million years
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500 million years ago
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How long ago do scientists think the solar system formed?(1 point)
Responses 4.3 million years ago 4.3 million years ago 4.6
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The correct response is: 4.6 billion years ago
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How long ago do scientists think the solar system formed?(1 point)
Responses 2.6 billion years ago 2.6 billion years ago 6.2
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4.6 billion years ago
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How long ago do scientists think the solar system formed?(1 point)
Responses 4.6 billion years ago 4.6 billion years ago 4.3
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Scientists think that the solar system formed approximately 4.6 billion years ago.
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How long ago do scientists think the solar system formed?(1 point)
Responses 2.6 billion years ago 2.6 billion years ago 4.3
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4.6 billion years ago
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How long ago do scientists think the solar system formed?(1 point)
Responses 6.2 billion years ago 6.2 billion years ago 4.6
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Scientists think that the solar system formed 4.6 billion years ago.
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How long ago do scientists think the solar system formed?(1 point)
Responses 6.2 billion years ago 6.2 billion years ago 2.6
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4.6 billion years ago
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How long ago do scientists think the solar system formed?(1 point)
Responses 4.3 million years ago 4.3 million years ago 2.6
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4.6 billion years ago
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