How does heart failure affect the body?
a. oxygen does not make it to the brain
b. energy is not given to the body
c. carbon dioxide builds up in the body
d. all of above
i think it's a : p

It's D. Because all of that happens firstly yeah no oxygen but also no energy because there's no air going to the brain. since also your heart is not taking oxygen, or like not working, there is gonna be a massive build up!

Iwould you figure it out but you don't have a picture or in your question as to what the physical property you're looking for is

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 .