Acube 20 cm on one side could contain how many milliliters of fluid?
how many liters of fluid is this?

Before this we need to know the correlation between volume in liters (l) and in cubic cm (cmł), 1 l = 1000 cmł. Then we need to under stand the correlation between cubic cm (cmł) and cubic mm (mmł), 1000 cmł = 1 000 000 mmł. Finally all we have to do is calculating the volume of the cube, because all side have the same length, the math is simple. Calculating the content for any rectangle shape is width times length times height. So in this case 20 cm * 20 cm * 20 cm = 8000 cmł as seen before this is a total of 8000 cmł = 8 000 000 mmł or 8 liters of fluid.

C: plants and animals

It will fall off and tip over.