Pick the two true statements from the following: graduated cylinders are used to measure volume. all graduated cylinders measure liquids with the same precision. graduated cylinders are the only instruments used to measure volume in the laboratory. always read a graduated cylinder from the bottom of the meniscus.

- Graduated cylinders are used to measure volume.
- Always read a graduated cylinder from the bottom of the meniscus.

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .