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Which variable stars have pulsation periods between 1.5 hours and 1.2 days? A. RR Lyrae variables B. Nebulas C. Protostars D. Cepheid variables
The stars that have pulsation periods between 1.5 hours and 1.2 days are RR Lyrae variables
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Asked 12/22/2015 3:50:52 PM
Updated 12/23/2015 10:07:48 AM
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Edited by jeifunk [12/23/2015 10:07:46 AM], Confirmed by jeifunk [12/23/2015 10:07:48 AM]
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Unlike mammals, fish utilize gills for gas exchange.
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Lampreys: group of chordates that does not possess true backbones.
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The embryo develops into a seedling accurately describes the angiosperm plant life cycle.
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Like chordates, all invertebrates have tails.
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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
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Photosynthesis is not a major function of the roots.
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