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Q: Carbon-12 is the most common isotope of carbon. It has 6 protons, 6 neutrons, and 6 electrons. Of its 6 electrons, 4 are valence electrons. How many covalent bonds can a carbon atom form? A. 1 B.
4 C. 6 D. 12
A: B. 4 Cvalent bonds can form a carbon atom
Expert answered|AwesomeGuy200|Points 674|
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Asked 6/3/2012 9:41:52 PM
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Many cacti, such as saguaros and barrel cacti, have large stems and no leaves. What function of leaves is taken on by the stems of such cacti? A. They produce food by photosynthesis. B. They absorb water and nutrients from the soil. C. They transport materials throughout the plant. D. They store excess water.
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Updated 1/9/2015 3:01:53 PM
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Many cacti, such as saguaros and barrel cacti, have large stems but no leaves. The function of leaves that is taken on my the stems of such cacti is: They produce food by photosynthesis.

Added 1/9/2015 3:01:53 PM
This answer has been confirmed as correct and helpful.
Confirmed by sujaysen [1/9/2015 3:08:01 PM]
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