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Q: Which of the following is a radioisotope used to date rock formations? A. carbon-14 B. uranium-235 C. cobalt-60 D. carbon-12
A: A. carbon-14
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Asked 5/23/2012 1:48:15 PM
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what helps explain the trend in life expectancy in America? A. Multinational corporations have increased. B. Health care technology has improved. C. Satellites broadcast television around the world. D. More immigrants enter the country every year.
Weegy: D. More immigrants enter the country every year. (More)
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Expert Answered
Updated 8/26/2014 7:02:15 AM
1 Answer/Comment
Health care technology has improved. This helps explain the trend in life expectancy in America.
Added 8/26/2014 7:02:14 AM
This answer has been confirmed as correct and helpful.
what does sublimation mean
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Expert Answered
Updated 9/15/2014 6:23:30 AM
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Sublimation in chemistry is the transition of a substance directly from the solid to the gas phase without passing through an intermediate liquid phase.
Added 9/15/2014 5:42:24 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [9/15/2014 6:23:34 AM]
the electron cloud model means what? A. the most likely locations of electrons in atoms B. the precise locations of electrons in atoms C. the number of electrons in an atom D. the mass of the electrons in an atom
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Expert Answered
Updated 101 days ago|10/9/2017 2:59:27 AM
1 Answer/Comment
Cloud model describes the most likely locations of electrons in atoms.
Added 101 days ago|10/9/2017 2:59:27 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [10/9/2017 4:08:15 AM]
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