There are _ valence electrons in the Lewis structure of CH3CH2OCH3.

3 1/4 %

explanation:

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

there is none because earth is stationary and flat.