An object has a mass of 20 kg and a volume of 5 ml. what is the object's density?
i think either b or c
4 kg/cm3
100 kg/cm3
0.25 kg/cm3

Good grief, this stuff got caught in a black hole somewhere. It is terribly dense.
1 mL = 1 cc under normal conditions.

d = mass / volume
m = 20 kg
v = 5 mL

d = 20kg / 5 mL
d = 4 kg / mL
d = 4 kg / cc

A <<<<answer

It changes food into energy that the organism can use.