Question and answer
Which colorless and odorless gas, produced by radioactive decay of Uranium-238, is considered to be a cancer-causing agent? A. Radon B. Hydrogen C. Boron D. Oxygen
RADON is a colorless and odorless gas, produced by radioactive decay of Uranium-238, considered to be a cancer-causing agent.
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debnjerry|Points 71420|
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Asked 12/22/2015 3:45:14 PM
Updated 12/23/2015 4:56:53 AM
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This answer has been confirmed as correct and helpful.
Edited by selymi [12/23/2015 4:56:52 AM], Confirmed by selymi [12/23/2015 4:56:53 AM]
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Unlike mammals, fish A. can take in oxygen from the air. B. utilize gills for gas exchange. C. need oxygen to survive. D. release carbon dioxide.
Question
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Updated 8/29/2016 5:05:49 AM
1 Answer/Comment
Unlike mammals, fish utilize gills for gas exchange.
Added 8/29/2016 5:05:49 AM
This answer has been confirmed as correct and helpful.
Confirmed by Andrew. [8/29/2016 5:24:01 AM]
Which group of chordates does not possess true backbones? A. Lampreys B. Crocodilians C. Birds D. Frogs and toads
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Updated 2/9/2016 1:50:57 AM
1 Answer/Comment
Lampreys: group of chordates that does not possess true backbones.
Added 2/9/2016 1:50:57 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [2/9/2016 2:15:30 AM]
Which of the following accurately describes the angiosperm plant life cycle? A. The anther produces eggs. B. The ovule develops into an anther. C. The ovary is haploid. D. The embryo develops into a seedling.
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Updated 3/13/2016 9:43:21 AM
1 Answer/Comment
The embryo develops into a seedling accurately describes the angiosperm plant life cycle.
Added 3/13/2016 9:43:21 AM
This answer has been confirmed as correct and helpful.
Confirmed by Andrew. [3/13/2016 6:10:45 PM]
Like chordates, all invertebrates have A. tails. B. backbones. C. eukaryotic cells. D. pharyngeal pouches.
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Updated 8/4/2016 3:59:15 AM
1 Answer/Comment
Like chordates, all invertebrates have tails.
Added 8/4/2016 3:59:15 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [8/4/2016 9:07:41 AM]
Which of the following is not a major function of the roots? A. Photosynthesis B. Providing a membrane in which osmosis moves water across C. Uptake of nutrients D. Development of root pressure that drives movement
Question
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Updated 12/16/2015 12:02:26 AM
1 Answer/Comment
Photosynthesis is not a major function of the roots.
Added 12/16/2015 12:02:26 AM
This answer has been confirmed as correct and helpful.
Confirmed by Andrew. [12/16/2015 2:35:49 AM]
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