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The _______ are involuntary. A. biceps and triceps muscles B. skeletal muscles C. cardiac muscles D. fast-twitch muscles
The CARDIAC muscles are involuntary.
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Asked 4/25/2013 10:08:43 AM
Updated 7/5/2016 4:19:30 PM
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The CARDIAC muscles are involuntary.
Added 7/5/2016 4:19:30 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [7/5/2016 4:31:31 PM]
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Spiders make up a class of Arthropods called: A. Insecta B. Arachnida C. Crustacea D. Animalia
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Updated 8/21/2014 11:09:07 PM
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Spiders make up a class of Arthropods called: Arachnida.
Added 8/21/2014 11:09:05 PM
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Confirmed by jeifunk [8/21/2014 11:14:41 PM]
The changes of an immature insect to an adult is called: A. fertilization B. symbiosis C. metamorphosis D. mitosis
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Updated 8/2/2016 3:57:35 AM
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The changes of an immature insect to an adult is metamorphosis.
Added 8/2/2016 3:57:35 AM
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Confirmed by vchutkan [8/2/2016 10:40:18 PM]
What enzyme acts with hydrochloric acid to break down protein in the stomach? A. glucose B. starch C. pepsin D. propylene
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Updated 8/10/2016 3:58:31 AM
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Pepsin acts with hydrochloric acid to break down protein in the stomach.
Added 8/10/2016 3:58:31 AM
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Confirmed by jeifunk [8/10/2016 9:00:32 AM], Rated good by jeifunk
All mammals and birds are _______.
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Updated 1/14/2014 3:13:50 PM
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All mammals and birds are ENDOTHERMS, "warm-blooded" animals which largely produce their own heat.
Added 1/14/2014 3:13:50 PM
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_______ feathers insulate the bird. A. Contour B. Crop C. Down D. Powder
Weegy: Down feathers insulate the bird. ] (More)
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Updated 2/21/2014 6:59:35 AM
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