The answer is C) 550 I think
Why won’t it let me answer
The best answer is B (semi permeable)
The cell membrane of a red blood cell is semi permeable membrane. This is a type of biological membrane that will allow certain molecules or ions to pass through while barring others.
Red blood cells have very thin membranes that allow oxygen diffuse through quickly. They are also permeable to water and osmosis across the membrane occurs very rapidly. In the body, they are bathed in isotonic plasma in which case water movement into the cell is equal to water movement out of the cell and so the cells remain intact.
Answer:
b) The solar radiation can be absorbed by clouds and the atmosphere
Explanation:
The clouds consist of water vapour and the atmosphere consists of mixture of ai for example the carbon dioxide and methane. The water vapour and these two gases can all absorb sunlight. Reason for this is that the bonding pairs of electrons come from different atoms in the molecule and the bonds are distorted. Symmetrical molecules but with distorted bonds or bond electron pairs.
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