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doit_the_clown doit_the_clown
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7 years ago
The internal structure of the Earth is
A)   a core of solid rock extensively enriched in iron, surrounded by a solid mantle of pure rock.
B)   a large, solid iron core surrounded by a thick, flexible mantle of rock.
C)   a core of rock and iron, surrounded by a mantle of liquid hydrogen.
D)   a large core of iron, partly solid and partly molten, surrounded by a thick, flexible mantle of rock.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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discovererdiscoverer
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doit_the_clown Author
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7 years ago
Brilliant ツ
Marctheshark
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
shimyshiguy
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2 hours ago
Helped a lot
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