Answer:
Custom, Cultural Practice, Festival, Fiesta, Anniversary, ...
Any of these. Choose one!
<em>Hope this helps!!!</em>
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Because it determines if it is isolated or not. This means if other substances can enter or not. This usually relies on the membrane with it´s pores. The pores help the membrane be selectively permeable in what it lets in and out.
The answer to this question is : <span>Plantae</span>