8. A sample of an unknown substance has a volume that is independent of its container. Which additional information is needed to determine the state of the sample?
A. the mass of the sample
B. the density of the sample
C. whether the sample has a fixed shape
D. whether the sample conducts electricity

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.