Based on the cell theory, which of the following is true? Group of answer choices

All cells are too small to be seen.

All living things are made of cells.

Small organisms have more cells than large organisms.

Large organisms have larger cells than small organisms.

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?