I think it is the cell membrane, but there is a possibility it is the cell wall. I think the cell membrane is correct because the skin does allow certain things into your skin cells, such as water. Similarly, cell membranes allow certain things in the cell. The cell membrane basically acts as the security guard of the cell.
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the UMWA organized the district 21 branch of the united mine workers.
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When gold was discovered on Cherokee land in Georgia, whites poured onto Cherokee lands by the thousands, ignoring treaties, burning villages, and flaunting the U.S. Constitution and the Non-Intercourse laws passed by Congress
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A two-party system is a party system in which two major political parties dominate the political landscape. In the U.S. the two political parties are known as the Democratic party and the Republican party. Whichever one typically holds the majority is usually referred to as the majority or governing party while the other is the minority or opposition party. Although around the world the term has different senses.
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