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lutik1710 [3]
2 years ago
14

What is the possible consequence of melting glaciers on polar bears

Biology
1 answer:
OverLord2011 [107]2 years ago
5 0

Answer:

loss of habitat and probably the disappearance of the species

Explanation:

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A semi permeable bag (permeable to water but not to sucrose) contains a 2 % sucrose solution.
Burka [1]

Answer:

a) A beaker filled with 1 liter of deionized water?  - water will flow into the bag so its volume will increase. The solution is <u>hypotonic</u>

b) A beaker filled with 1 liter of 10% sucrose solution?  - water will flow out of the bag so its volume will reduce. The solution is <u>hypertonic</u>

c) A beaker filled with 1 liter of 2% sucrose solution - the volume of water in the bag will stay the same as the two solutions are in equilibrium. The solution is <u>isotonic</u>

Explanation:

Water moves by osmosis through a semi-permeable membrane. Osmosis describes the simple diffusion of water molecules.

Water molecules will move from a high concentration to a low concentration.

  • If the bag of 2% sucrose solution is placed in a beaker of deionized water, the concentration of water in the deionized water is in the beaker higher than in the bag (because the water in the bag contains 2% sucrose). Therefore, the water in the beaker will move from a high concentration outside the bag to a lower concentration inside the bag
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  • When the concentration of water is equal, the movment of water molecules reaches an equilibrium and there will be no change in the volume of water in the bag
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