What does percent composition tell you about a molecule?​

its first and third is your answer i did the qustion the fourth isnt right

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? ?

i don,t know so just answer mine

it is the most commonly accepted one