Answer:
The correct option is A. A semi-permeable membrane
Explanation:
A semi-permeable membrane can be described as a selective membrane that filters out which molecules to let-in and let-out of the cell. The semi-permeable membrane causes selective molecules or ions to move inside or outside it through processes like diffusion, facilitated diffusion, passive transport, active transport, osmosis etc.
On the other hand, a permeable membrane is not selective and will allow and will let any kind of molecules to pass.
If we could magically look down on our solar system, we would see that the half of the Moon facing the Sun is always lit. But the lit side does not always face the Earth! As the Moon circles the Earth, the amount of the lit side we see changes.
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B. Temperature. Soil consistence is defined as the material properties of the soil.
Isolation such as geological can cause speciation because if one species where divided into two because of geological reasons, they're likely to change their behaviors and physical appearances to match that region.
