Water is an example of a mixture because it is made up of hydrogen and oxygen atoms bonded together. true false

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➷ Water is not a mixture as the atoms have chemically bonded. Water is a compound.

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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 .