Oxygen's valence, based on the Number of valence electrons or outermost electrons that oxygen has would be 6.
NO cLuE I jUsT nEeD pOiNtS tO bEaT mY liTtLe bRoThEr
C) To gather info about the natural world, to explain natural phenomena, and allow reasonable predictions of future events
c. cell wall, vacuole
Among the choices above, the two features that indicate that a cell is a plant cell is the cell wall and vacuole. The cell wall can only be found in plant cells. It is the rigid cell that surrounds the cell membrane. The vacuole of a plant cell and animal cell are way too different. The vacuole of an animal cell is usually more than one and small, even smaller that that of the plant cell. On the other hand, the vacuole of the plant cell is only one in fact a large one that takes up almost 90 percent of the volume of the cell
