A genome is most accurately defined as which of the following?

the portion of our DNA that codes for proteins
the noncoding portion of our DNA
all the DNA found in our cells
a map of a chromosome

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?