The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
Answer:
I'm not sure of the answer but I do believe it is C The Great Lakes
Http://www.indiana.edu/~geol105/images/gaia_chapter_3/wegener.htm
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1.) 0
2.) 2
3.) 4
4.) 3
5.) 3
6.) ?
7.) 1
8.) 6
9.) 3
10.) Fox
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