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18. The first species that colonizes new or undisturbed land is called a _______ species. A. premier B. primary C. predecessor D. pioneer
The first species that colonizes new or undisturbed land is called a B. pioneer species.
Janet17|Points 5752|
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Asked 1/13/2014 3:02:40 PM
Updated 1/13/2014 3:33:49 PM
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Confirmed by jeifunk [1/13/2014 3:33:49 PM]
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7. Valve _______ is the distance the camshaft lobe opens a valve. A. nose B. lift C. duration D. ramp
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Updated 86 days ago|4/24/2018 6:24:26 AM
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Valve LIFT is the distance the camshaft lobe opens a valve.

Added 86 days ago|4/24/2018 6:24:26 AM
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6. What's the net force acting on an 18-kg object if an acceleration of 3.0 m/s2 is produced? A. 36 N B. 12 N C. 6 N D. 54 N
Weegy: The net force acting on an 18-kg object if an acceleration of 3.0 m/s2 is: 54 N. User: 7. Energy is _______ when it's moved from one object to another. A. transferred B. conducted C. created D. lost (More)
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Updated 184 days ago|1/16/2018 10:44:59 AM
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Energy is transferred when it's moved from one object to another.
Added 184 days ago|1/16/2018 10:44:59 AM
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Confirmed by jeifunk [1/16/2018 10:48:46 PM]
Mark for review (Will be highlighted on the review page) 2. Which of the following would increase friction? A. Soap B. Sand C. Motor oil D. Water
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Updated 7/14/2016 5:43:21 AM
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Sand would increase friction.
Added 7/14/2016 5:43:21 AM
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Confirmed by yumdrea [7/14/2016 11:25:16 AM]
8. The Sun and most stars are made almost entirely of A. helium and nitrogen. B. helium and hydrogen. C. hydrogen and carbon. D. oxygen and nitrogen.
Weegy: The Sun and most stars are made almost entirely of helium and hydrogen. (More)
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Updated 201 days ago|12/30/2017 12:37:59 PM
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20. An explosion that destroys a massive star is called a A. vacuum. B. nebula. C. supernova. D. black hole.
Weegy: An explosion that destroys a massive star is called a C) supernova (More)
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Updated 1/17/2014 8:11:37 AM
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