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Earth is approximately 4.5 billion

Scientists have estimated the Earth to be approximately __________ years old.A. 6.4 million B. 4.6 million C. 6.4 billion D. 4.6
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suppose investment is $30 billion, exports are $20 billion, imports are $50 billion, government spending is $80 billion, and
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If you think there are a lot of people on Earth (about 7.5 billion), consider the following number: ten quintillion. That's the
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China population is approximately 1.325 billion. The United States has approximately 0.304 billion. How many times as many
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China population is approximately 1.325 billion. The United States has approximately 0.304 billion. How many times as many
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3. Which region has the lowest population density?A. East Asia primarily China, but also Korea and Japan combined have
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The first organisms on Earth appeared approximately 3.8 billion years ago and were all unicellular. Multicellular organisms have
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The first organisms on Earth appeared approximately 3.8 billion years ago and were all unicellular. Multicellular organisms have
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The first organisms on Earth appeared approximately 3.8 billion years ago and were all unicellular. Multicellular organisms have
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The first organisms on Earth appeared approximately 3.8 billion years ago and were all unicellular. Multicellular organisms have
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