The geologic time scale divides earth’s history into blocks of time with each block separated by important events, such as the disappearance of a species of fossil from the rock record. true false

Dr. arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode. it measures the volume of the sound that occurs at the minimum pressure at which the explosion will occur. it then increases the pressure and measures the volume of the explosions that occur. what kind of investigation is the scientist conducting?