When blood passes through the lungs, carbon dioxide and water are formed from carbonic acid dissolved in the blood. the carbon dioxide formed passes into the lungs and is exhaled.
h2co3 h2o + co2
what kind of reaction has occurred?

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 .

Answerhund's rule;

The process is c.convection