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In order for the human body to make vitamin D, some exposure to what kind of light waves is necessary. (a) infrared waves (b) microwaves (c) ultraviolet waves (d) X-rays
In order for the human body to make vitamin D, some exposure to ultraviolet light waves is necessary.
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Asked 5/27/2013 11:27:01 AM
Updated 257 days ago|11/4/2017 10:48:18 AM
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Edited by yumdrea [11/4/2017 10:32:54 AM]
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In order for the human body to make vitamin D, some exposure to ultraviolet light waves is necessary.
Added 257 days ago|11/4/2017 10:48:18 AM
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A path created for current that allows only one route for the current is called a ___. (a) parallel circuit (b) parallel (c) series circuit (d) series current
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Updated 5/27/2013 11:51:42 AM
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A path created for current that allows only one route for the current is called a series circuit.
Added 5/27/2013 11:51:42 AM
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Confirmed by Andrew. [10/10/2016 11:41:30 AM]
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