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This element is needed for cellular respiration. a.oxygen b.calcium c.fluorine d.sodium
Oxygen is needed for cellular respiration.
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Asked 2/1/2011 12:19:21 PM
Updated 7/18/2015 7:15:56 AM
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Oxygen is needed for cellular respiration.
Added 7/18/2015 7:15:56 AM
This answer has been confirmed as correct and helpful.
Confirmed by Andrew. [7/18/2015 7:19:47 AM]
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A(n) _____ key is very easy to use because it provides only two choices. A.answer B.monochotomous C.dichotomous D.observation
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Updated 6/7/2016 12:25:58 AM
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A dichotomous key is very easy to use because it provides only two choices.
Added 6/7/2016 12:25:58 AM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [6/7/2016 12:28:47 AM]
Things of the same species have similar morphology and can _____. a.communicate b.interbreed c.move the same way d.eat the same prey
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Updated 6/24/2015 12:47:42 PM
1 Answer/Comment
Things of the same species have similar morphology and can interbreed.

Added 6/24/2015 12:47:42 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [6/24/2015 12:53:15 PM]
A scientist who classifies organisms is called a _____. A.botanist B.zoologist C.taxonomist D.optometrist
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Updated 6/21/2014 2:21:01 AM
1 Answer/Comment
A scientist who classifies organisms is called a TAXONOMIST.
Added 6/21/2014 2:21:01 AM
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