An isotope of Luckycharmium has a half-life of 120 days. How many days will have passed when 50% of a Luckycharmium sample remains?

what's the

i think   the answer is c hope i'm 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? ?