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what is Pressure-flow? User: what is Diffusion?
Weegy: Osmosis is the diffusion of water through a semi-permeable membrane, from a solution of low solute concentration (high water potential) to a solution with high solute concentration (low water potential), up a solute concentration gradient. User: A trophic pyramid describes who eats whom, and in general, from one level to the next, what percentage is transferred? (More)
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Updated 8/13/2014 2:38:58 AM
3 Answers/Comments
The Pressure Flow Hypothesis, is the best-supported theory to explain the movement of food through the phloem.
Added 8/13/2014 2:31:34 AM
Confirmed by jeifunk [8/13/2014 2:35:41 AM], Unconfirmed by jeifunk [8/13/2014 2:35:43 AM]
Diffusion is the net movement of a substance from a region of high concentration to a region of low concentration.
Added 8/13/2014 2:32:27 AM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by jeifunk [8/13/2014 2:35:57 AM]
A trophic pyramid describes who eats whom, and in general, from one level to the next, 10% is transferred.



Added 8/13/2014 2:38:58 AM
This answer has been confirmed as correct, not copied, and helpful.
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