Acharacteristic of most organic compound is that they a) have low melting points b) high melting points c) are soluble in water d) conduct electricity when dissolved in water

The answer is option A "have low melting points." One of the main characteristics of organic compounds is that they have low melting points meaning that the temperature a solid would need in order to melt down into a liquid. Also other characteristics of organic compounds is that they have carbon atoms, and functional groups.

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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 .