An unknown solution is tested with the three indicators above. The results were: yellow with methyl orange, green with bromothymol blue and clear in phenolphthalein. The solution is __1__ with a pH of approximately __2__. acidic 3.8
acidic 6.2
basic 6.2
basic 8.0

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? ?

it is the most commonly accepted one