How do you determine the difference between a living specimen and a nonliving one?

What is the empirical formula for c4h8o2

Drug abuse will not lead to physical and psychological dependence. true or false ?

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?