If you move a substance from one container to another and its volume changes substances is gas.
Answer:
Acceleration is the rate of change in velocity
the answer to your question is
volume
Fossils are fundamental to the geologic time scale. The names of most of the eons and eras end in zoic, because these time intervals are often recognized on the basis of animal life. Rocks formed during the Proterozoic Eon may have fossils of relative simple organisms, such as bacteria, algae, and wormlike animals
